GPIES Video: https://vimeo.com/341427762

Gemini Planet Imager Planet Search Shows Giant Planets Orbiting Sun-like Stars May Be Rare 

June 12, 2019, Mountain View, CA — The Gemini Planet Imager (GPI), a dedicated planet-finding instrument at the Gemini South telescope in Chile, is concluding a 4-year survey – the GPI Exoplanet Survey (GPIES) – of 531 young, nearby stars searching for giant planets. Analysis of half of the survey data to be published in The Astronomical Journal suggests that giant planets orbiting Sun-like stars, slightly more massive than Jupiter in our solar system, may be rare. GPIES is led by Stanford astronomers and includes an international team. 

“We suspect that in our own solar system Jupiter and Saturn sculpted its final architecture that influences the properties of terrestrial planets like Mars and Earth, including basic elements for life like the delivery of water, and the impact rates,” said Franck Marchis, Senior researcher at the SETI Institute and a co-author of the paper. “A planetary system with only terrestrial planets and no giant planets will probably be very different to ours, and this could have consequences on the possibility for the existence of life elsewhere in our galaxy.”

The way GPI searches for exoplanets is different from the methods used in other exoplanet research. Most exoplanets discovered thus far, including those found by NASA’s Kepler spacecraft, are found via indirect methods, such as observing a dimming in the star’s light as an orbiting planet eclipses its parent star (the transit method), or by observing the star’s wobble as the planet’s gravity tugs on the star (the radial-velocity method). These methods have been incredibly successful, but mostly probe the central regions of planetary systems. Those regions outside the orbit of Jupiter, where the giant planets are located in our solar system, are usually out of their reach. GPI, however, endeavors to directly detect planets in this area of space by taking a picture of them alongside their parent stars.

Imaging a planet around another star is a difficult technical challenge reserved to a few instruments, including GPI. Planets are small, faint and very close to their host star. Distinguishing an orbiting planet from its star is like resolving the width of a dime from miles away, and even the brightest planets are ten thousand times fainter, and GPI can see planets a million times fainter than the stars they orbit. Searching for planets this way is also time consuming.

“GPI was designed and built specifically to overcome this challenge, and images from the survey are much more sensitive than those from previous generations of planet-imaging instruments,” said Bruce Macintosh, principal investigator of the project and professor at Stanford University. “The Gemini Observatory gave us time to do a careful, systematic survey. This analysis of the first 300 stars observed by GPIES represents the largest, most sensitive direct imaging survey for giant planets published to date.”

GPI Uncovers a Previously-Hidden Planet and Brown Dwarf 

An early success of GPIES was the discovery of 51 Eridani b in December 2014, a planet about two-and-a-half times more massive than Jupiter, and orbiting just beyond the distance Saturn orbits our own Sun. The host star 51 Eridani is just 97 light-years away and is only 26 million years old (nearby and young, by astronomy standards). It had been observed by multiple planet-imaging surveys with a variety of telescopes and instruments, but its planet was not detected until GPI’s superior instrumentation was able to suppress the starlight enough for the planet to be visible.

GPIES also discovered the brown dwarf HR 2562 B, which is at a distance similar to that between the Sun and Uranus and is 30 times more massive than Jupiter. Brown dwarfs are objects that are more massive than planets, but not massive enough to fuse hydrogen into helium like stars. A longstanding question is whether these intermediate-mass objects are born more like stars or planets. Stars form from the top down, by the gravitational collapse of large primordial clouds of gas and dust, while planets are thought—but have not been confirmed—to form from the bottom up, by the assembly of small rocky bodies that then grow into larger ones, a process also termed “core accretion”.

The discoveries made by GPIES, together with its confirmation of an additional five planets and two brown dwarfs that had been detected by earlier generations of instruments, have now shed important new light on questions of formation.

“With six detected planets and three detected brown dwarfs, along with unprecedented sensitivity to planets a few times the mass of Jupiter at orbital distances beyond Saturn’s, our sample can directly answer key questions about wide-separation giant planets and brown dwarfs,” said Eric Nielsen, researcher at Stanford University, previously a postdoctoral fellow at the SETI Institute and lead author of the paper.

“What the GPIES Team’s analysis shows is that the properties of brown dwarfs and giant planets run completely counter to each other,” said Eugene Chiang, professor of astronomy at UC Berkeley and a co-author of the paper. “Whereas more massive brown dwarfs outnumber less massive brown dwarfs, for giant planets the trend is reversed: less massive planets outnumber more massive ones. Moreover, brown dwarfs tend to be found far from their host stars, while giant planets concentrate closer in. These opposing trends point to brown dwarfs forming top-down, and giant planets forming bottom-up.”

More Massive Stars are Over-represented as Hosts of Detected Planets 

Out of 300 stars, 123 are more than one-and-a-half times more massive than our Sun. One of the most striking results of the GPI survey is that all hosts of detected planets are among these higher-mass stars, even though it is easier to see a giant planet orbiting a fainter, more Sun-like star.

The relationship between the mass of the star and the giant planet frequency suspected for years has been unambiguously confirmed by this study. The finding also appears to be consistent with the bottom-up formation scenario for planets.

Where are the Jupiters? 

One of the greatest surprises that emerged in exoplanet studies has been how different other planetary systems are from our own. While our solar system has small, rocky planets in the inner parts and giant gas planets in the outer parts, we have learned from all exoplanet surveys how intrinsically uncommon giant planets seem to be around Sun-like stars, and how different other solar systems are. Extrapolation of simple models made us believe that GPI would find a dozen giant planets or more, but only saw 6. Putting it all together, giant planets may be present around only a minority of stars like our own. Although GPIES was not sensitive to low-mass planets such as Jupiter, the trends established for higher-mass planets, and in particular, their strong preference to be hosted by stars more massive than the Sun, are clues that one way in which our solar system may be atypical is Jupiter’s presence.

“If this finding is confirmed after analyzing the rest of the survey and more surveys from ground and space-based telescopes to come, it will have an impact on our understanding of the existence of life on terrestrial planets” said Marchis, “and that’s ultimately the raison d’etre of those surveys to understand how planetary system formed and what kind of life could exist elsewhere.”

GPIES observed its 531st, and final, new star in January 2019, and the team is currently following up the remaining candidates to determine which are truly planets and which are distant background stars impersonating giant planets. As this follow-up concludes, the team will move on to publishing the analysis of the entire survey and will begin an upgrade process to make GPI even more sensitive to smaller-mass, closer-in planets as it moves from Chile to Hawaii to begin a new search for planets at the Gemini-North telescope.

Gemini PR: Gemini: https://www.gemini.edu/node/21206

SETI Institute PR: https://www.seti.org/gemini-planet-imager-planet-search-shows-giant-planets-orbiting-sun-stars-may-be-rare

Stanford PR: https://news.stanford.edu/press-releases/2019/06/12/gemini-planet-imalyzes-300-stars/

UC Berkeley PR: https://news.berkeley.edu/2019/06/12/jupiter-like-exoplanets-found-in-sweet-spot-in-most-planetary-systems/

This research was based on observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership. It was funded by the National Science Foundation, the National Aeronautics and Space Administration, the Natural Sciences and Engineering Research Council of Canada, the National Research Council of Canada, Fonds de Recherche du Québec, the Heising-Simons Foundation, Lawrence Livermore National Laboratory, the Center for Exoplanets and Habitable Worlds.

About the SETI Institute 

Founded in 1984, the SETI Institute is a non-profit, multi-disciplinary research and education organization whose mission is to explore, understand, and explain the origin and nature of life in the universe and the evolution of intelligence. Our research encompasses the physical and biological sciences and leverages expertise in data analytics, machine learning and advanced signal detection technologies. The SETI Institute is a distinguished research partner for industry, academia and government agencies, including NASA and NSF.

Contact information
Rebecca McDonald
Director of Communications, SETI Institute
189 Bernardo Ave. Suite 200
Mountain View, CA 94043
rmcdonald@seti.org
www.seti.org

The GPI data pipeline allows users to reduce and calibrate raw GPI data into spectral and polarimetric datacubes, and apply various PSF subtraction methods to those data.

It is written in IDL by members of the GPI instrument collaboration. Source code is available for users who have copies of IDL, and a compiled version is available for all others.

Users of the GPI data pipeline should please cite one of the following papers:

Perrin, Maire, Ingraham,  et al. “Gemini Planet Imager Observational Calibrations I: Overview of the GPI Data Reduction Pipeline”  Proc. SPIE, 2014, 9147

Maire, Perrin, Doyon, et al. “Test Results for the Gemini Planet Imager Data Pipeline”, Proc. SPIE, 2012, 8451

Maire, Perrin, Doyon, et al. “Data Reduction Pipeline for the Gemini Planet Imager”, Proc SPIE, 2010, 7735

Downloads

GPI Data pipeline version 1.4.0 (released 2016 July 15). ZIP files:

• Source code
• Compiled code (platform independent, install your own IDL VM)
• Compiled code (with Mac OS X IDL runtime included)
• Compiled code (with Window IDL runtime included)
• Compiled code (with Linux  IDL runtime included)

• Documentation for this software is available here, including installation and usage instructions.

Exiled exoplanet likely kicked out of star’s neighborhood

UC Berkeley Press Release published on December 1, 2015
Written by Robert Sander, Media Relations

A planet discovered last year sitting at an unusually large distance from its star – 16 times farther than Pluto is from the sun – may have been kicked out of its birthplace close to the star in a process similar to what may have happened early in our own solar system’s history.

Images from the Gemini Planet Imager (GPI) in the Chilean Andes and the Hubble Space Telescope show that the star has a lopsided comet belt indicative of a very disturbed solar system, and hinting that the planet interactions that roiled the comets closer to the star might have sent the exoplanet into exile as well.

A wide-angle view of the star HD 106906 taken by the Hubble Space Telescope and a close-up view from the Gemini Planet Imager reveal a dynamically disturbed system of comets, suggesting a link between this and the unusually distant planet (upper right), 11 times the mass of Jupiter. Click image for hi-res versions & caption. Paul Kalas image, UC Berkeley.

The planet may even have its own ring of debris that it dragged along with it.

“We think that the planet itself could have captured material from the comet belt, and that the planet is surrounded by a large dust ring or dust shroud,” said Paul Kalas, an adjunct professor of astronomy at the University of California, Berkeley. “We conducted three tests and found tentative evidence for a dust cloud, but the jury is still out.”

“The measurements we made on the planet suggest it may be dustier than comparison objects, and we are making follow-up observations to check if the planet is really encircled by a disk – an exciting possibility,” added Abhi Rajan, a graduate student at Arizona State University who analyzed the planet images.

Such planets are of interest because in its youth, our own solar system may have had planets that were kicked out of the local neighborhood and are no longer among of the eight planets we see today.

“Is this a picture of our solar system when it was 13 million years old?” asks Kalas. “We know that our own belt of comets, the Kuiper belt, lost a large fraction of its mass as it evolved, but we don’t have a time machine to go back and see how it was decimated. One of the ways, though, is to study these violent episodes of gravitational disturbance around other young stars that kick out many objects, including planets.”

The disturbance could have been caused by a passing star that perturbed the inner planets, or a second massive planet in the system. The GPI team looked for another large planet closer to the star that may have interacted with the exoplanet, but found nothing outside of a Uranus-sized orbit.

Kalas and Rajan will discuss the observations during a Google+ Hangout On Air at 7 a.m. Hawaii time (noon EST) on Dec. 1 during Extreme Solar Systems III, the third in a series of international meetings on exoplanets that this year takes place on the 20th anniversary of the discovery of the first exoplanet in 1995. Viewers without Google+ accounts may participate via YouTube.

A paper about the results, with Kalas as lead author, was published in the The Astrophysical Journal on Nov. 20, 2015.

Young, 13-million-year-old star

The star, HD 106906, is located 300 light years away in the direction of the constellation Crux and is similar to the sun, but much younger: about 13 million years old, compared to our sun’s 4.5 billion years. Planets are thought to form early in a star’s history, however, and in 2014 a team led by Vanessa Bailey at the University of Arizona discovered a planet HD 106906 b around the star weighing a hefty 11 times Jupiter’s mass and located in the star’s distant suburbs, an astounding 650 AU from the star (one AU is the average distance between Earth and the sun, or 93 million miles).

Planets were not thought to form so far from their star and its surrounding protoplanetary disk, so some suggested that the planet formed much like a star, by condensing from its own swirling cloud of gas and dust. The GPI and Hubble discovery of a lopsided comet belt and possible ring around the planet points instead to a normal formation within the debris disk around the star, but a violent episode that forced it into a more distant orbit.

Kalas and a multi-institutional team using GPI first targeted the star in search of other planets in May 2015 and discovered that it was surrounded by a ring of dusty material very close to the size of our own solar system’s Kuiper Belt. The emptiness of the central region – an area about 50 AU in radius, slightly larger than the region occupied by planets in our solar system – indicates that a planetary system has formed there, Kalas said.

He immediately reanalyzed existing images of the star taken earlier by the Hubble Space Telescope and discovered that the ring of dusty material extended much farther away and was extremely lopsided. On the side facing the planet, the dusty material was vertically thin and spanned nearly the huge distance to the known planet, but on the opposite side the dusty material was vertically thick and truncated.

“These discoveries suggest that the entire planetary system has been recently jostled by an unknown perturbation to its current asymmetric state,” he said. The planet is also unusual in that its orbit is possibly tilted 21 degrees away from the plane of the inner planetary system, whereas most planets typically lie close to a common plane.

Kalas and collaborators hypothesized that the planet may have originated from a position closer to the comet belt, and may have captured dusty material that still orbits the planet. To test the hypothesis, they carefully analyzed the GPI and Hubble observations, revealing three properties about the planet consistent with a large dusty ring or shroud surrounding it. However, for each of the three properties, alternate explanations are possible.

The investigators will be pursuing more sensitive observations with the Hubble Space Telescope to determine if HD 106906b is in fact one of the first exoplanets that resembles Saturn and its ring system.

The inner belt of dust around the star has been confirmed by an independent team using the planet-finding instrument SPHERE on the ESO’s Very Large Telescope in Chile. The lopsided nature of the debris disk was not evident, however, until Kalas called up archival images from Hubble’s Advanced Camera for Surveys.

The GPI Exoplanet Survey, operated by a team of astronomers at UC Berkeley and 23 other institutions, is targeting 600 young stars, all less than approximately 100 million years old, to understand how planetary systems evolve over time and what planetary dynamics could shape the final arrangement of planets like we see in our solar system today. GPI operates on the Gemini South telescope and provides extremely high-resolution, high-contrast direct imaging, integral field spectroscopy and polarimetry of exoplanets.

Among Kalas’s coauthors are UC Berkeley graduate student Jason Wang. The research was supported by the National Science Foundation and NASA’s Nexus for Exoplanet System Science (NExSS) research coordination network sponsored by NASA’s Science Mission Directorate.

RELATED INFORMATION

• Direct imaging of an asymmetric debris disk in the HD 106906 planetary system (ApJ)
  – Paul Kalas’s website
  – Gemini Planet Imager

The Gemini Planet Imager Exoplanet Survey (GPIES) is an ambitious three-year study dedicated to imaging young Jupiters and debris disks around nearby stars using the GPI instrument installed on the Gemini South telescope in Chile. On November 12 2015, at the 47th annual meeting of the AAS’s Division for Planetary Sciences in Washington DC, Franck Marchis, Chair of the Exoplanet Research Group of the SETI Institute and a scientist involved in the project since 2004, will report on the status of the survey, emphasizing some discoveries made in its first year.

Led by Bruce Macintosh from Stanford University, the survey began a year ago and has already been highly successful, with several findings already published in peer-reviewed journals.

“This very large survey is observing 600 young stars to look for two things: giant planets orbiting them and debris disks. In our first year, we have already found what GPI was designed to discover — a young Jupiter in orbit around a nearby star,” said Marchis. This discovery was announced in an article published in Science on Oct. 2, 2015 [http://www.sciencemag.org/content/350/6256/64], with an impressive list of 88 co-authors from 39 institutions located in North and South America. “This is modern astronomy at its best,” said Marchis. “These large projects gather energy and creativity from many groups of researchers at various institutions, enabling them to consider different strategies to improve the on-sky efficiency of the instrument and its scientific output.”

Orbital motion of 51 Eri b detected between two H-band observations taken with the Gemini Planet Imager in December 2014 and September 2015. From this motion, and additional observations of the system, the team of astronomers confirmed that this point of light below the star is indeed a planet orbiting 51 Eri and not a brown dwarf passing along our line of sight. (credit: Christian Marois & the GPIES team)

The survey was officially launched in November 2014. Eight observing runs allowed the study of approximately 160 targets, or a quarter of the sample. Other parts of the survey are more frustrating, though. Due to the incipient El Nino, weather in Chile is worse than expected, with clouds, rain, snow, and atmospheric turbulence too severe even for GPI to fix. Since late June, out of the last 20 nights that team members have spent at the telescope, they’ve only gotten a few hours of good quality data Despite this loss, over which the team of course had no control, they have already published ten peer-reviewed papers in the last year. Two of the findings are described below.

GPI data has revealed that 51 Eri b, the recently discovered Jupiter-like exoplanet around the nearby star 51 Eridani [http://www.gemini.edu/node/12403], indeed has an atmosphere of methane and water, and likely has a mass twice that of Jupiter. The team has continued to observe this planetary system, and observations recorded on Sept. 1, 2015, are most consistent with a planet orbiting 51 Eri and not a brown dwarf passing along our line of sight.

“Thanks to GPI’s incredible precision, we can demonstrate that the odds are vanishingly small that 51 Eri b is actually a brown dwarf that has a chance alignment with this star. In fact it’s five times more likely that I’ll be struck by lightning this year than future data will show this is not a planet orbiting 51 Eri” said Eric Nielsen, a postdoctoral scholar at the SETI Institute and one of the authors of the paper recently accepted for publication in the Astrophysical Journal Letters [http://arxiv.org/abs/1509.07514]. Another author of this study, SETI Research Experience for Undergraduates student Sarah Blunt, analyzed the motion of 51 Eri b and found it to be completely consistent with a planet on an approximately 40-year orbit around its host star.

GPI detection of dust-scattered star light around HD 131835 in H-band linearly polarized intensity. The focal plane mask (filled black circle) was used to block the light from the star (white x). The stronger forward scattering makes the front (NW) side of the disk more apparent. A weaker brightness asymmetry is detected along the major axis with the NE side being brighter than the SW side. By studying resolved images of debris disks, we hope to better understand the giant planet formation and evolution environment (credits: Li-Wei Hung & the GPIES team)

The team has also discovered and imaged disks of dusty debris around several stars. Astronomers believe that these are planetary systems that are still forming their planets. Some have complex structures because they host planets and fragments of the asteroidal and cometary materials that formed those planets. One such system is HD 131835: a massive 15 Myr-old star located 400 light-years from Earth. Using GPI’s high-contrast capability, the team imaged this disk for the first time in near-infrared light in May 2015.

“The disk shows different morphology when observed in different wavelengths. Unlike the extended disk previously imaged in thermal emission, our GPI observations show a disk that has a ring-like structure, indicating that the large grains are distributed differently from the small ones. In addition, we discovered an asymmetry in the disk along its major axis. What causes this disk to be asymmetric is the subject of ongoing investigation, “ said Li-Wei Hung, a graduate student in the UCLA Department of Physics and Astronomy and lead author of the article submitted to the Astrophysical Journal Astrophysical Journal Letters. As asymmetries like the one seen in the system may be due to the gravitational influence of an unseen planet, more detailed observational study could one day confirm its existence.

As the GPIES survey enters in its second year, we are collaborating with the Gemini Observatory to continue to improve the instrument. The Gemini South telescope primary mirror was recently re-coated with silver to improve reflectivity, and the GPI instrument was equipped with a new cooling system to optimize performance.

“Continued collaboration between the Gemini Observatory and the GPIES collaboration has worked really well — we’re learning a lot about how it performs in the field and interacts with the atmosphere, and are working to make GPI an even a better instrument to see even fainter and closer planets,” said Bruce Macintosh, principal investigator of the project and professor at Stanford University.

2021

R. Gratton, V. D’Orazi, T. A. Pacheco, A. Zurlo, S. Desidera, J. Meléndez, D. Mesa, R. Claudi, M. Janson, M. Langlois, E. Rickman, M. Samland, T. Moulin, C. Soenke, E. Cascone, J. Ramos, F. Rigal, H. Avenhaus, J. L. Beuzit, B. Biller, A. Boccaletti, M. Bonavita, M. Bonnefoy, W. Brandner, G. Chauvin, M. Cudel, S. Daemgen, P. Delorme, C. Desgrange, N. Engler, M. Feldt, C. Fontanive, R. Galicher, A. Garufi, D. Gasparri, C. Ginski, J. Girard, J. Hagelberg, S. Hunziker, M. Kasper, M. Keppler, A.-M. Lagrange, J. Lannier, C. Lazzoni, H. Le Coroller, R. Ligi, M. Lombart, A.-L. Maire, M. R. Mayer, S. Mazevet, F. Ménard, D. Mouillet, C. Perrot, S. Peretti, S. Petrus, A. Potier, D. Rouan, H. M. Schmid, T. O. B. Schmidt, E. Sissa, T. Stolker, G. Salter, A. Vigan, F. Wildi (2021) Investigating three Sirius-like systems with SPHERE, Astronomy & Astrophysics 646, p. A61, doi:10.1051/0004-6361/202039601

K. Ward-Duong, J. Patience, K. Follette, R. J. De Rosa, J. Rameau, M. Marley, D. Saumon, E. L. Nielsen, A. Rajan, A. Z. Greenbaum, J. Lee, J. J. Wang, I. Czekala, G. Duchêne, B. Macintosh, S. Mark Ammons, V. P. Bailey, T. Barman, J. Bulger, C. Chen, J. Chilcote, T. Cotten, R. Doyon, T. M. Esposito, M. P. Fitzgerald, B. L. Gerard, S. J. Goodsell, J. R. Graham, P. Hibon, J. Hom, L.-W. Hung, P. Ingraham, P. Kalas, Q. Konopacky, J. E. Larkin, J. Maire, F. Marchis, C. Marois, S. Metchev, M. A. Millar-Blanchaer, R. Oppenheimer, D. Palmer, M. Perrin, L. Poyneer, L. Pueyo, F. T. Rantakyrö, B. Ren, J.-B. Ruffio, D. Savransky, A. C. Schneider, A. Sivaramakrishnan, I. Song, R. Soummer, M. Tallis, S. Thomas, J. Kent Wallace, S. Wiktorowicz, S. Wolff (2021) Gemini Planet Imager Spectroscopy of the Dusty Substellar Companion HD 206893 B, The Astronomical Journal 161(1), p. 5, doi:10.3847/1538-3881/abc263

Tiffany Meshkat, Peter Gao, Eve J. Lee, Dimitri Mawet, Elodie Choquet, Marie Ygouf, Rahul Patel, Garreth Ruane, Jason Wang, Nicole Wallack, Olivier Absil, Charles Beichman (2021) Characterization of HD 206893 B from Near- to Thermal-infrared, The Astrophysical Journal 917(2), p. 62, doi:10.3847/1538-4357/ac09ed

Katie A. Crotts, Brenda C. Matthews, Thomas M. Esposito, Gaspard Duchêne, Paul Kalas, Christine H. Chen, Pauline Arriaga, Maxwell A. Millar-Blanchaer, John H. Debes, Zachary H. Draper, Michael P. Fitzgerald, Justin Hom, Meredith A. MacGregor, Johan Mazoyer, Jennifer Patience, Malena Rice, Alycia J. Weinberger, David J. Wilner, Schuyler Wolff (2021) A Deep Polarimetric Study of the Asymmetrical Debris Disk HD 106906, The Astrophysical Journal 915(1), p. 58, doi:10.3847/1538-4357/abff5c

2020

Meiji M. Nguyen, Robert J. De Rosa, Jason J. Wang, Thomas M. Esposito, Paul Kalas, James R. Graham, Bruce Macintosh, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Gaspard Duchêne, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, Alexandra Z. Greenbaum, Pascale Hibon, Justin Hom, Li-Wei Hung, Patrick Ingraham, Quinn Konopacky, James E. Larkin, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Eric L. Nielsen, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Bin Ren, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Melisa Tallis, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2020) HD 165054: An Astrometric Calibration Field for High-contrast Imagers in Baade’s Window, The Astronomical Journal 159(6), p. 244, doi:10.3847/1538-3881/ab86aa

Gaspard Duchêne, Malena Rice, Justin Hom, Joseph Zalesky, Thomas M. Esposito, Maxwell A. Millar-Blanchaer, Bin Ren, Paul Kalas, Michael P. Fitzgerald, Pauline Arriaga, Sebastian Bruzzone, Joanna Bulger, Christine H. Chen, Eugene Chiang, Tara Cotten, Ian Czekala, Robert J. De Rosa, Ruobing Dong, Zachary H. Draper, Katherine B. Follette, James R. Graham, Li-Wei Hung, Ronald Lopez, Bruce Macintosh, Brenda C. Matthews, Johan Mazoyer, Stan Metchev, Jennifer Patience, Marshall D. Perrin, Julien Rameau, Inseok Song, Kevin Stahl, Jason Wang, Schuyler Wolff, Ben Zuckerman, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Jeffrey Chilcote, Rene Doyon, Benjamin L. Gerard, Stephen J. Goodsell, Alexandra Z. Greenbaum, Pascale Hibon, Patrick Ingraham, Quinn Konopacky, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Eric L. Nielsen, Rebecca Oppenheimer, David Palmer, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Rémi Soummer, Sandrine Thomas, Kimberley Ward-Duong (2020) The Gemini Planet Imager View of the HD 32297 Debris Disk, The Astronomical Journal 159(6), p. 251, doi:10.3847/1538-3881/ab8881

Bin Ren, Laurent Pueyo, Christine Chen, Élodie Choquet, John H. Debes, Gaspard Duchêne, François Ménard, Marshall D. Perrin (2020) Using Data Imputation for Signal Separation in High-contrast Imaging, The Astrophysical Journal 892(2), p. 74, doi:10.3847/1538-4357/ab7024

Eric L. Nielsen, Robert J. De Rosa, Jason J. Wang, Johannes Sahlmann, Paul Kalas, Gaspard Duchêne, Julien Rameau, Mark S. Marley, Didier Saumon, Bruce Macintosh, Maxwell A. Millar-Blanchaer, Meiji M. Nguyen, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Quinn Konopacky, James E. Larkin, Jérôme Maire, Franck Marchis, Christian Marois, Stanimir Metchev, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2020) The Gemini Planet Imager Exoplanet Survey: Dynamical Mass of the Exoplanet β Pictoris b from Combined Direct Imaging and Astrometry, The Astronomical Journal 159(2), p. 71, doi:10.3847/1538-3881/ab5b92

Juan Sebastián Bruzzone, Stanimir Metchev, Gaspard Duchêne, Maxwell A. Millar-Blanchaer, Ruobing Dong, Thomas M. Esposito, Jason J. Wang, James R. Graham, Johan Mazoyer, Schuyler Wolff, S. Mark Ammons, Adam C. Schneider, Alexandra Z. Greenbaum, Brenda C. Matthews, Pauline Arriaga, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Robert J. De Rosa, Rene Doyon, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, Pascale Hibon, Justin Hom, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Bruce Macintosh, Jérôme Maire, Franck Marchis, Christian Marois, Katie M. Morzinski, Eric L. Nielsen, Rebecca Oppenheimer, David Palmer, Rahul Patel, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Dmitry Savransky, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz (2020) Imaging the 44 au Kuiper Belt Analog Debris Ring around HD 141569A with GPI Polarimetry, The Astronomical Journal 159(2), p. 53, doi:10.3847/1538-3881/ab5d2e

Justin Hom, Jennifer Patience, Thomas M. Esposito, Gaspard Duchêne, Kadin Worthen, Paul Kalas, Hannah Jang-Condell, Kezman Saboi, Pauline Arriaga, Johan Mazoyer, Schuyler Wolff, Maxwell A. Millar-Blanchaer, Michael P. Fitzgerald, Marshall D. Perrin, Christine H. Chen, Bruce Macintosh, Brenda C. Matthews, Jason J. Wang, James R. Graham, Franck Marchis, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey K. Chilcote, Tara Cotten, Robert J. De Rosa, René Doyon, Katherine B. Follette, Steven Goodsell, Alexandra Z. Greenbaum, Pascale Hibon, Patrick Ingraham, Quinn Konopacky, James E. Larkin, Jerome Maire, Mark S. Marley, Christian Marois, Elisabeth Matthews, Stanimir Metchev, Eric L. Nielsen, Rebecca Oppenheimer, David Palmer, Lisa A. Poyneer, Laurent Pueyo, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Bin Ren, Dmitry Savransky, Adam Schneider, Anand Sivaramakrishnan, Inseok Song, Rémi Soummer, Melisa Tallis, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane J. Wiktorowicz, Ben Zuckerman (2020) First Resolved Scattered-light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager, The Astronomical Journal 159(1), p. 31, doi:10.3847/1538-3881/ab5af2

Rebecca Jensen-Clem, Maxwell A. Millar-Blanchaer, Rob G. van Holstein, Dimitri Mawet, James Graham, Sujan Sengupta, Mark S. Marley, Frans Snik, Arthur Vigan, Sasha Hinkley, Jos de Boer, Julien H. Girard, Robert J. De Rosa, Brendan P. Bowler, Sloane J. Wiktorowicz, Marshall D. Perrin, Justin R. Crepp, Bruce Macintosh (2020) A Search for Polarized Thermal Emission from Directly Imaged Exoplanets and Brown Dwarf Companions to Nearby Stars, The Astronomical Journal 160(6), p. 286, doi:10.3847/1538-3881/abc33d

Ji Wang, Jason J. Wang, Bo Ma, Jeffrey Chilcote, Steve Ertel, Olivier Guyon, Ilya Ilyin, Nemanja Jovanovic, Paul Kalas, Julien Lozi, Bruce Macintosh, Klaus G. Strassmeier, Jordan Stone (2020) On the Chemical Abundance of HR 8799 and the Planet c, The Astronomical Journal 160(3), p. 150, doi:10.3847/1538-3881/ababa7

Pauline Arriaga, Michael P. Fitzgerald, Gaspard Duchêne, Paul Kalas, Maxwell A. Millar-Blanchaer, Marshall D. Perrin, Christine H. Chen, Johan Mazoyer, Mark Ammons, Vanessa P. Bailey, Trafis S. Barman, Joanna Bulger, Jeffrey K. Chilcote, Tara Cotten, Robert J. De Rosa, Rene Doyon, Thomas M. Esposito, Katherine B. Follette, Benjamin L. Gerard, Stephen Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Justin Hom, Li-Wei Hung, Patrick Ingraham, Quinn M. Konopacky, Bruce A. Macintosh, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Stanimir Metchev, Eric L. Nielsen, Rebecca Oppenheimer, David W. Palmer, Jenny Patience, Lisa A. Poyneer, Laurent Pueyo, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, Jason J. Wang, Kimberly Ward-Duong, Schuyler G. Wolff (2020) Multiband Polarimetric Imaging of HR 4796A with the Gemini Planet Imager, The Astronomical Journal 160(2), p. 79, doi:10.3847/1538-3881/ab91b1

Christine Chen, Johan Mazoyer, Charles A. Poteet, Bin Ren, Gaspard Duchêne, Justin Hom, Pauline Arriaga, Maxwell A. Millar-Blanchaer, Jessica Arnold, Vanessa P. Bailey, Juan Sebastián Bruzzone, Jeffrey Chilcote, Élodie Choquet, Robert J. De Rosa, Zachary H. Draper, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Pascale Hibon, Dean C. Hines, Paul Kalas, Franck Marchis, Brenda Matthews, Julien Milli, Jennifer Patience, Marshall D. Perrin, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyrö, Timothy J. Rodigas, Gael M. Roudier, Glenn Schneider, Rémi Soummer, Christopher Stark, Jason J. Wang, Kimberly Ward-Duong, Alycia J. Weinberger, David J. Wilner, Schuyler Wolff (2020) Multiband GPI Imaging of the HR 4796A Debris Disk, The Astrophysical Journal 898(1), p. 55, doi:10.3847/1538-4357/ab9aba

Thomas M. Esposito, Paul Kalas, Michael P. Fitzgerald, Maxwell A. Millar-Blanchaer, Gaspard Duchêne, Jennifer Patience, Justin Hom, Marshall D. Perrin, Robert J. De Rosa, Eugene Chiang, Ian Czekala, Bruce Macintosh, James R. Graham, Megan Ansdell, Pauline Arriaga, Sebastian Bruzzone, Joanna Bulger, Christine H. Chen, Tara Cotten, Ruobing Dong, Zachary H. Draper, Katherine B. Follette, Li-Wei Hung, Ronald Lopez, Brenda C. Matthews, Johan Mazoyer, Stan Metchev, Julien Rameau, Bin Ren, Malena Rice, Inseok Song, Kevin Stahl, Jason Wang, Schuyler Wolff, Ben Zuckerman, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Jeffrey Chilcote, Rene Doyon, Benjamin L. Gerard, Stephen J. Goodsell, Alexandra Z. Greenbaum, Pascale Hibon, Sasha Hinkley, Patrick Ingraham, Quinn Konopacky, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Eric L. Nielsen, Rebecca Oppenheimer, David Palmer, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Rémi Soummer, Sandrine Thomas, Kimberly Ward-Duong (2020) Debris Disk Results from the Gemini Planet Imager Exoplanet Survey's Polarimetric Imaging Campaign, The Astronomical Journal 160(1), p. 24, doi:10.3847/1538-3881/ab9199

2019

Robert J. De Rosa, Eric L. Nielsen, Julien Rameau, Gaspard Duchêne, Alexandra Z. Greenbaum, Jason J. Wang, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, James R. Graham, Pascale Hibon, Justin Hom, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Bruce Macintosh, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyrö, Bin Ren, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Melisa Tallis, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2019) Detection of a Low-mass Stellar Companion to the Accelerating A2IV Star HR 1645, The Astronomical Journal 158(6), p. 226, doi:10.3847/1538-3881/ab4ef7

Christina L. Vides, Bruce Macintosh, Breanna A. Binder, Robert J. De Rosa, Jean-Baptiste Ruffio, Dmitry Savransky (2019) Model of the Search for Extraterrestrial Intelligence with Coronagraphic Imaging, The Astronomical Journal 158(5), p. 207, doi:10.3847/1538-3881/ab40b8

Bin Ren, Élodie Choquet, Marshall D. Perrin, Gaspard Duchêne, John H. Debes, Laurent Pueyo, Malena Rice, Christine Chen, Glenn Schneider, Thomas M. Esposito, Charles A. Poteet, Jason J. Wang, S. Mark Ammons, Megan Ansdell, Pauline Arriaga, Vanessa P. Bailey, Travis Barman, Juan Sebastián Bruzzone, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Robert J. De Rosa, Rene Doyon, Michael P. Fitzgerald, Katherine B. Follette, Stephen J. Goodsell, Benjamin L. Gerard, James R. Graham, Alexandra Z. Greenbaum, J. Brendan Hagan, Pascale Hibon, Dean C. Hines, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Bruce Macintosh, Jérôme Maire, Franck Marchis, Christian Marois, Johan Mazoyer, François Ménard, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Tushar Mittal, Margaret Moerchen, Eric L. Nielsen, Mamadou N’Diaye, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Christophe Pinte, Lisa Poyneer, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Dominic Ryan, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Rémi Soummer, Christopher Stark, Sandrine Thomas, Arthur Vigan, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff, Marie Ygouf, Colin Norman (2019) An Exo–Kuiper Belt with an Extended Halo around HD 191089 in Scattered Light, The Astrophysical Journal 882(1), p. 64, doi:10.3847/1538-4357/ab3403

Jacob Shapiro, Dmitry Savransky, Jean-Baptiste Ruffio, Nikhil Ranganathan, Bruce Macintosh (2019) Detecting Planets from Direct-imaging Observations Using Common Spatial Pattern Filtering, The Astronomical Journal 158(3), p. 125, doi:10.3847/1538-3881/ab3642

Alexandra Z. Greenbaum, Anthony Cheetham, Anand Sivaramakrishnan, Fredrik T. Rantakyrö, Gaspard Duchêne, Peter Tuthill, Robert J. De Rosa, Rebecca Oppenheimer, Bruce Macintosh, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Andrew Cardwell, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, James R. Graham, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Katie M. Morzinski, Eric L. Nielsen, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Julien Rameau, Naru Sadakuni, Dmitry Savransky, Adam C. Schneider, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Jason J. Wang, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2019) Performance of the Gemini Planet Imager Non-redundant Mask and Spectroscopy of Two Close-separation Binaries: HR 2690 and HD 142527, The Astronomical Journal 157(6), p. 249, doi:10.3847/1538-3881/ab17db

Eric L. Nielsen, Robert J. De Rosa, Bruce Macintosh, Jason J. Wang, Jean-Baptiste Ruffio, Eugene Chiang, Mark S. Marley, Didier Saumon, Dmitry Savransky, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Célia Blain, Joanna Bulger, Adam Burrows, Jeffrey Chilcote, Tara Cotten, Ian Czekala, Rene Doyon, Gaspard Duchêne, Thomas M. Esposito, Daniel Fabrycky, Michael P. Fitzgerald, Katherine B. Follette, Jonathan J. Fortney, Benjamin L. Gerard, Stephen J. Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Sasha Hinkley, Lea A. Hirsch, Justin Hom, Li-Wei Hung, Rebekah Ilene Dawson, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Eve J. Lee, Jonathan W. Lin, Jérôme Maire, Franck Marchis, Christian Marois, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Katie M. Morzinski, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Roman R. Rafikov, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Bin Ren, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Melisa Tallis, Sandrine Thomas, Kimberly Ward-Duong, Schuyler Wolff (2019) The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics from 10 to 100 au, The Astronomical Journal 158(1), p. 13, doi:10.3847/1538-3881/ab16e9

Robert J. De Rosa, Eric L. Nielsen, Jason J. Wang, S. Mark Ammons, Gaspard Duchêne, Bruce Macintosh, Julien Rameau, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Justin Hom, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyrö, Bin Ren, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Melisa Tallis, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2019) An Updated Visual Orbit of the Directly Imaged Exoplanet 51 Eridani b and Prospects for a Dynamical Mass Measurement with Gaia, The Astronomical Journal 159(1), p. 1, doi:10.3847/1538-3881/ab4da4

2018

Jason Wang, Marshall Perrin, Dmitry Savransky, Pauline Arriaga, Jeffrey Chilcote, Robert De Rosa, Maxwell Millar-Blanchaer, Christian Marois, Julien Rameau, Schuyler Wolff, Jacob Shapiro, Jean-Baptiste Ruffio, Jérôme Maire, Franck Marchis, James Graham, Bruce Macintosh, S. Mark Ammons, Vanessa Bailey, Travis Barman, Sebastian Bruzzone, Joanna Bulger, Tara Cotten, René Doyon, Gaspard Duchêne, Michael Fitzgerald, Katherine Follette, Stephen Goodsell, Alexandra Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James Larkin, Mark Marley, Stanimir Metchev, Eric Nielsen, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Fredrik Rantakyrö, Adam Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz (2018) Automated data processing architecture for the Gemini Planet Imager Exoplanet Survey, doi:10.1117/1.JATIS.4.1.018002

Jason J. Wang, James R. Graham, Rebekah Dawson, Daniel Fabrycky, Robert J. De Rosa, Laurent Pueyo, Quinn Konopacky, Bruce Macintosh, Christian Marois, Eugene Chiang, S. Mark Ammons, Pauline Arriaga, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Gaspard Duchêne, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, James E. Larkin, Jérôme Maire, Franck Marchis, Mark S. Marley, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Eric L. Nielsen, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2018) Dynamical Constraints on the HR 8799 Planets with GPI, The Astronomical Journal 156(5), p. 192, doi:10.3847/1538-3881/aae150

Thomas M. Esposito, Gaspard Duchêne, Paul Kalas, Malena Rice, Élodie Choquet, Bin Ren, Marshall D. Perrin, Christine H. Chen, Pauline Arriaga, Eugene Chiang, Eric L. Nielsen, James R. Graham, Jason J. Wang, Robert J. De Rosa, Katherine B. Follette, S. Mark Ammons, Megan Ansdell, Vanessa P. Bailey, Travis Barman, Juan Sebastián Bruzzone, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Michael P. Fitzgerald, Stephen J. Goodsell, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Quinn Konopacky, James E. Larkin, Bruce Macintosh, Jérôme Maire, Franck Marchis, Christian Marois, Johan Mazoyer, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Dominic Ryan, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Rémi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2018) Direct Imaging of the HD 35841 Debris Disk: A Polarized Dust Ring from Gemini Planet Imager and an Outer Halo from HST /STIS, The Astronomical Journal 156(2), p. 47, doi:10.3847/1538-3881/aacbc9

Alexandra Z. Greenbaum, Laurent Pueyo, Jean-Baptiste Ruffio, Jason J. Wang, Robert J. De Rosa, Jonathan Aguilar, Julien Rameau, Travis Barman, Christian Marois, Mark S. Marley, Quinn Konopacky, Abhijith Rajan, Bruce Macintosh, Megan Ansdell, Pauline Arriaga, Vanessa P. Bailey, Joanna Bulger, Adam S. Burrows, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Gaspard Duchêne, Michael P. Fitzgerald, Katherine B. Follette, Benjamin Gerard, Stephen J. Goodsell, James R. Graham, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, James E. Larkin, Jérôme Maire, Franck Marchis, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Eric L. Nielsen, Andrew Norton, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall D. Perrin, Lisa Poyneer, Fredrik T. Rantakyrö, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Rémi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2018) GPI Spectra of HR 8799 c, d, and e from 1.5 to 2.4 μ m with KLIP Forward Modeling, The Astronomical Journal 155(6), p. 226, doi:10.3847/1538-3881/aabcb8

2017

Eric L. Nielsen, Robert J. De Rosa, Julien Rameau, Jason J. Wang, Thomas M. Esposito, Maxwell A. Millar-Blanchaer, Christian Marois, Arthur Vigan, S. Mark Ammons, Etienne Artigau, Vanessa P. Bailey, Sarah Blunt, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, René Doyon, Gaspard Duchêne, Daniel Fabrycky, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Sasha Hinkley, Li-Wei Hung, Patrick Ingraham, Rebecca Jensen-Clem, Paul Kalas, Quinn Konopacky, James E. Larkin, Bruce Macintosh, Jerome Maire, Franck Marchis, Stanimir Metchev, Katie M. Morzinski, Ruth A. Murray-Clay, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Roman R. Rafikov, Abhijith Rajan, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2017) Evidence that the Directly-Imaged Planet HD 131399 Ab is a Background Star, doi:10.3847/1538-3881/aa8a69

Katherine B. Follette, Julien Rameau, Ruobing Dong, Laurent Pueyo, Laird M. Close, Gaspard Duchene, Jeffrey Fung, Clare Leonard, Bruce Macintosh, Jared R. Males, Christian Marois, Maxwell A. Millar-Blanchaer, Katie M. Morzinski, Wyatt Mullen, Marshall Perrin, Elijah Spiro, Jason Wang, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Robert J. De Rosa, Rene Doyon, Michael P. Fitzgerald, Stephen J. Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Jerome Maire, Franck Marchis, Stanimir Metchev, Eric L. Nielsen, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Lisa Poyneer, Abhijith Rajan, Fredrik T. Rantakyro, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, David Vega, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2017) Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO, doi:10.3847/1538-3881/aa6d85

Jean-Baptiste Ruffio, Bruce Macintosh, Jason J. Wang, Laurent Pueyo, Eric L. Nielsen, Robert J. De Rosa, Ian Czekala, Mark S. Marley, Pauline Arriaga, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Gaspard Duchêne, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Jérôme Maire, Franck Marchis, Christian Marois, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Katie M. Morzinski, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2017) Improving and Assessing Planet Sensitivity of the GPI Exoplanet Survey with a Forward Model Matched Filter, doi:10.3847/1538-4357/aa72dd

Abhijith Rajan, Julien Rameau, Robert J. De Rosa, Mark S. Marley, James R. Graham, Bruce Macintosh, Christian Marois, Caroline Morley, Jennifer Patience, Laurent Pueyo, Didier Saumon, Kimberly Ward-Duong, S. Mark Ammons, Pauline Arriaga, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Adam S. Burrows, Jeffrey Chilcote, Tara Cotten, Ian Czekala, Rene Doyon, Gaspard Duchêne, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Jonathan J. Fortney, Stephen J. Goodsell, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Mara Johnson-Groh, Paul Kalas, Quinn Konopacky, David Lafrenière, James E. Larkin, Jérôme Maire, Franck Marchis, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Katie M. Morzinski, Eric L. Nielsen, Rebecca Oppenheimer, David Palmer, Rahul I. Patel, Marshall Perrin, Lisa Poyneer, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Rémi Soummer, Sandrine Thomas, Gautam Vasisht, J. Kent Wallace, Jason J. Wang, Sloane Wiktorowicz, Schuyler Wolff (2017) Characterizing 51 Eri b from 1-5 $\mu$m: a partly-cloudy exoplanet, doi:10.3847/1538-3881/aa74db

Julien Rameau, Katherine B. Follette, Laurent Pueyo, Christian Marois, Bruce Macintosh, Maxwell Millar-Blanchaer, Jason J. Wang, David Vega, Rene Doyon, David Lafreniere, Eric L. Nielsen, Vanessa Bailey, Jeffrey K. Chilcote, Laird M. Close, Thomas M. Esposito, Jared R. Males, Stanimir Metchev, Katie M. Morzinski, Jean-Baptiste Ruffio, Schuyler G. Wolff, S. M. Ammons, Travis S. Barman, Joanna Bulger, Tara Cotten, Robert J. De Rosa, Gaspard Duchene, Michael P. Fitzgerald, Stephen Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Jerome Maire, Franck Marchis, Mark S. Marley, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall D. Perrin, Lisa Poyneer, Abhijith Rajan, Fredrik T. Rantakyro, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz (2017) An Optical/near-infrared investigation of HD 100546 b with the Gemini Planet Imager and MagAO, doi:10.3847/1538-3881/aa6cae

Jeffrey Chilcote, Laurent Pueyo, Robert J. De Rosa, Jeffrey Vargas, Bruce Macintosh, Vanessa P. Bailey, Travis Barman, Brian Bauman, Sebastian Bruzzone, Joanna Bulger, Adam S. Burrows, Andrew Cardwell, Christine H. Chen, Tara Cotten, Daren Dillon, Rene Doyon, Zachary H. Draper, Gaspard Duchêne, Jennifer Dunn, Darren Erikson, Michael P. Fitzgerald, Katherine B. Follette, Donald Gavel, Stephen J. Goodsell, James R. Graham, Alexandra Z. Greenbaum, Markus Hartung, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn Konopacky, James E. Larkin, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Katie M. Morzinski, Eric L. Nielsen, Andrew Norton, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Naru Sadakuni, Leslie Saddlemyer, Dmitry Savransky, Adam C. Schneider, Andrew Serio, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Jason J. Wang, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2017) 1 to 2.4 micron Near-IR spectrum of the Giant Planet $\beta$ Pictoris b obtained with the Gemini Planet Imager, doi:10.3847/1538-3881/aa63e9

Mara Johnson-Groh, Christian Marois, Robert J. De Rosa, Eric L. Nielsen, Julien Rameau, Sarah Blunt, Jeffrey Vargas, S. Mark Ammons, Vanessa P. Bailey, Travis S. Barman, Joanna Bulger, Jeffrey K. Chilcote, Tara Cotten, Rene Doyon, Gaspard Duchene, Michael P. Fitzgerald, Kate B. Follette, Stephen Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn M. Konopacky, James E. Larkin, Bruce Macintosh, Jerome Maire, Franck Marchis, Mark S. Marley, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Rebecca Oppenheimer, David W. Palmer, Jenny Patience, Marshall Perrin, Lisa A. Poyneer, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyro, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, David Vega, J. Kent Wallace, Jason J. Wang, Kimberly Ward-Duong, Sloane J. Wiktorowicz, Schuyler G. Wolff (2017) Integral Field Spectroscopy of the Low-Mass Companion HD984B with the Gemini Planet Imager, doi:10.3847/1538-3881/aa6480

Sarah Blunt, Eric L. Nielsen, Robert J. De Rosa, Quinn M. Konopacky, Dominic Ryan, Jason J. Wang, Laurent Pueyo, Julien Rameau, Christian Marois, Franck Marchis, Bruce Macintosh, James R. Graham, Gaspard Duchene, Adam C. Schneider (2017) Orbits for the Impatient: A Bayesian Rejection Sampling Method for Quickly Fitting the Orbits of Long-Period Exoplanets, doi:10.3847/1538-3881/aa6930

2016

Marshall D. Perrin, Patrick Ingraham, Katherine B. Follette, Jérôme Maire, Jason J. Wang, Dmitry Savransky, Pauline Arriaga, Vanessa P. Bailey, Sebastian Bruzzone, Jeffrey K. Chilcote, Robert J. De Rosa, Zachary H. Draper, Michael P. Fitzgerald, Alexandra Z. Greenbaum, Li-Wei Hung, Quinn Konopacky, Bruce Macintosh, Franck Marchis, Christian Marois, Maxwell A. Millar-Blanchaer, Eric Nielsen, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyro, Jean-Baptiste Ruffio, Kimberly Ward-Duong, Schuyler G. Wolff, Joseph Zalesky (2016) Gemini Planet Imager observational calibrations XI: pipeline improvements and enhanced calibrations after two years on sky, Christopher J. Evans, Luc Simard, Hideki Takami (ed.), p. 990837, doi:10.1117/12.2233197

Eric L. Nielsen, Robert J. De Rosa, Jason Wang, Julien Rameau, Inseok Song, James R. Graham, Bruce Macintosh, Mark Ammons, Vanessa P. Bailey, Travis S. Barman, Joanna Bulger, Jeffrey K. Chilcote, Tara Cotten, Rene Doyon, Gaspard Duchêne, Michael P. Fitzgerald, Katherine B. Follette, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, Quinn M. Konopacky, James E. Larkin, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Rebecca Oppenheimer, David W. Palmer, Jenny Patience, Marshall D. Perrin, Lisa A. Poyneer, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyrö, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane J. Wiktorowicz, Schuyler G. Wolff (2016) DYNAMICAL MASS MEASUREMENT OF THE YOUNG SPECTROSCOPIC BINARY V343 NORMAE AaAb RESOLVED WITH THE GEMINI PLANET IMAGER, The Astronomical Journal 152(6), p. 175, doi:10.3847/0004-6256/152/6/175

Jason J. Wang, James R. Graham, Laurent Pueyo, Paul Kalas, Maxwell A. Millar-Blanchaer, Jean-Baptiste Ruffio, Robert J. De Rosa, S. Mark Ammons, Pauline Arriaga, Vanessa P. Bailey, Travis S. Barman, Joanna Bulger, Adam S. Burrows, Andrew Cardwell, Christine H. Chen, Jeffrey K. Chilcote, Tara Cotten, Michael P. Fitzgerald, Katherine B. Follette, René Doyon, Gaspard Duchêne, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Quinn M. Konopacky, James E. Larkin, Bruce Macintosh, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Stanimir Metchev, Eric L. Nielsen, Rebecca Oppenheimer, David W. Palmer, Rahul Patel, Jenny Patience, Marshall D. Perrin, Lisa A. Poyneer, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Dmitry Savransky, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, Gautam Vasisht, David Vega, J. Kent Wallace, Kimberly Ward-Duong, Sloane J. Wiktorowicz, Schuyler G. Wolff (2016) THE ORBIT AND TRANSIT PROSPECTS FOR β PICTORIS b CONSTRAINED WITH ONE MILLIARCSECOND ASTROMETRY, The Astronomical Journal 152(4), p. 97, doi:10.3847/0004-6256/152/4/97

Maxwell A. Millar-Blanchaer, Jason J. Wang, Paul Kalas, James R. Graham, Gaspard Duchêne, Eric L. Nielsen, Marshall Perrin, Dae-Sik Moon, Deborah Padgett, Stanimir Metchev, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Sebastian Bruzzone, Joanna Bulger, Christine H. Chen, Jeffrey Chilcote, Tara Cotten, Robert J. De Rosa, Rene Doyon, Zachary H. Draper, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Alexandra Z. Greenbaum, Pascale Hibon, Sasha Hinkley, Li-Wei Hung, Patrick Ingraham, Mara Johnson-Groh, Quinn Konopacky, James E. Larkin, Bruce Macintosh, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Brenda C. Matthews, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Lisa Poyneer, Laurent Pueyo, Abhijith Rajan, Julien Rameau, Fredrik T. Rantakyrö, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, David Vega, J. Kent Wallace, Kimberly Ward-Duong, Sloane Wiktorowicz, Schuyler Wolff (2016) IMAGING AN 80 au RADIUS DUST RING AROUND THE F5V STAR HD 157587, The Astronomical Journal 152(5), p. 128, doi:10.3847/0004-6256/152/5/128

Schuyler G. Wolff, Kimberly Ward-Duong, Joe Zalesky, Alex Z. Greenbaum, Marshall D. Perrin, James Graham (2016) Gemini planet imager observational calibration XIII: wavelength calibration improvements, stability, and nonlinearity, Christopher J. Evans, Luc Simard, Hideki Takami (ed.), p. 990838, doi:10.1117/12.2233644

Vanessa P. Bailey, Lisa A. Poyneer, Bruce A. Macintosh, Dmitry Savransky, Jason J. Wang, Robert J. De Rosa, Katherine B. Follette, S. Mark Ammons, Thomas Hayward, Patrick Ingraham, Jérôme Maire, David W. Palmer, Marshall D. Perrin, Abhijith Rajan, Fredrik T. Rantakyrö, Sandrine Thomas, Jean-Pierre Véran (2016) Status and performance of the Gemini Planet Imager adaptive optics system, Enrico Marchetti, Laird M. Close, Jean-Pierre Véran (ed.), p. 99090V, doi:10.1117/12.2233172

Benjamin L. Gerard, Christian Marois (2016) Planet detection down to a few λ/D: an RSDI/TLOCI approach to PSF subtraction, Enrico Marchetti, Laird M. Close, Jean-Pierre Véran (ed.), p. 990958, doi:10.1117/12.2231905

Maxwell A. Millar-Blanchaer, Marshall D. Perrin, Li-Wei Hung, Michael P. Fitzgerald, Jason J. Wang, Jeffrey Chilcote, James R. Graham, Sebastian Bruzzone, Paul G. Kalas (2016) GPI observational calibrations XIV: polarimetric contrasts and new data reduction techniques, Christopher J. Evans, Luc Simard, Hideki Takami (ed.), p. 990836, doi:10.1117/12.2233071

Franck Marchis, Paul G. Kalas, Marshall D. Perrin, Quinn M. Konopacky, Dmitry Savransky, Bruce Macintosh, Christian Marois, James R. Graham (2016) Large collaboration in observational astronomy: the Gemini Planet Imager exoplanet survey case, Alison B. Peck, Robert L. Seaman, Chris R. Benn (ed.), p. 99102D, doi:10.1117/12.2233313

Thomas M. Esposito, Michael P. Fitzgerald, James R. Graham, Paul Kalas, Eve J. Lee, Eugene Chiang, Gaspard Duchêne, Jason Wang, Maxwell A. Millar-Blanchaer, Eric Nielsen, S. Mark Ammons, Sebastian Bruzzone, Robert J. De Rosa, Zachary H. Draper, Bruce Macintosh, Franck Marchis, Stanimir A. Metchev, Marshall Perrin, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyrö, David Vega, Schuyler Wolff (2016) BRINGING “THE MOTH” TO LIGHT: A PLANET-SCULPTING SCENARIO FOR THE HD 61005 DEBRIS DISK, The Astronomical Journal 152(4), p. 85, doi:10.3847/0004-6256/152/4/85

Quinn M. Konopacky, Julien Rameau, Gaspard Duchêne, Joseph C. Filippazzo, Paige A. Giorla Godfrey, Christian Marois, Eric L. Nielsen, Laurent Pueyo, Roman R. Rafikov, Emily L. Rice, Jason J. Wang, S. Mark Ammons, Vanessa P. Bailey, Travis S. Barman, Joanna Bulger, Sebastian Bruzzone, Jeffrey K. Chilcote, Tara Cotten, Rebekah I. Dawson, Robert J. De Rosa, René Doyon, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Stephen Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Paul Kalas, David Lafrenière, James E. Larkin, Bruce A. Macintosh, Jérôme Maire, Franck Marchis, Mark S. Marley, Brenda C. Matthews, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Rebecca Oppenheimer, David W. Palmer, Jenny Patience, Marshall D. Perrin, Lisa A. Poyneer, Abhijith Rajan, Fredrik T. Rantakyrö, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Kimberly Ward-Duong, Sloane J. Wiktorowicz, Schuyler G. Wolff (2016) DISCOVERY OF A SUBSTELLAR COMPANION TO THE NEARBY DEBRIS DISK HOST HR 2562, The Astrophysical Journal 829(1), p. L4, doi:10.3847/2041-8205/829/1/L4

Zachary H. Draper, Gaspard Duchêne, Maxwell A. Millar-Blanchaer, Brenda C. Matthews, Jason J. Wang, Paul Kalas, James R. Graham, Deborah Padgett, S. Mark Ammons, Joanna Bulger, Christine Chen, Jeffrey K. Chilcote, René Doyon, Michael P. Fitzgerald, Kate B. Follette, Benjamin Gerard, Alexandra Z. Greenbaum, Pascale Hibon, Sasha Hinkley, Bruce Macintosh, Patrick Ingraham, David Lafrenière, Franck Marchis, Christian Marois, Eric L. Nielsen, Rebecca Oppenheimer, Rahul Patel, Jenny Patience, Marshall Perrin, Laurent Pueyo, Abhijith Rajan, Julien Rameau, Anand Sivaramakrishnan, David Vega, Kimberly Ward-Duong, Schuyler G. Wolff (2016) THE PECULIAR DEBRIS DISK OF HD 111520 AS RESOLVED BY THE GEMINI PLANET IMAGER, The Astrophysical Journal 826(2), p. 147, doi:10.3847/0004-637X/826/2/147

Robert J. De Rosa, Julien Rameau, Jenny Patience, James R. Graham, René Doyon, David Lafrenière, Bruce Macintosh, Laurent Pueyo, Abhijith Rajan, Jason J. Wang, Kimberly Ward-Duong, Li-Wei Hung, Jérôme Maire, Eric L. Nielsen, S. Mark Ammons, Joanna Bulger, Andrew Cardwell, Jeffrey K. Chilcote, Ramon L. Galvez, Benjamin L. Gerard, Stephen Goodsell, Markus Hartung, Pascale Hibon, Patrick Ingraham, Mara Johnson-Groh, Paul Kalas, Quinn M. Konopacky, Franck Marchis, Christian Marois, Stanimir Metchev, Katie M. Morzinski, Rebecca Oppenheimer, Marshall D. Perrin, Fredrik T. Rantakyrö, Dmitry Savransky, Sandrine Thomas (2016) SPECTROSCOPIC CHARACTERIZATION OF HD 95086 b WITH THE GEMINI PLANET IMAGER, The Astrophysical Journal 824(2), p. 121, doi:10.3847/0004-637X/824/2/121

Julien Rameau, Eric L. Nielsen, Robert J. De Rosa, Sarah C. Blunt, Jenny Patience, René Doyon, James R. Graham, David Lafrenière, Bruce Macintosh, Franck Marchis, Vanessa Bailey, Jeffrey K. Chilcote, Gaspard Duchene, Thomas M. Esposito, Li-Wei Hung, Quinn M. Konopacky, Jérôme Maire, Christian Marois, Stanimir Metchev, Marshall D. Perrin, Laurent Pueyo, Abhijith Rajan, Dmitry Savransky, Jason J. Wang, Kimberly Ward-Duong, Schuyler G. Wolff, S. Mark Ammons, Pascale Hibon, Patrick Ingraham, Paul Kalas, Katie M. Morzinski, Rebecca Oppenheimer, Fredrik T. Rantakyearö, Sandrine Thomas (2016) CONSTRAINTS ON THE ARCHITECTURE OF THE HD 95086 PLANETARY SYSTEM WITH THE GEMINI PLANET IMAGER, The Astrophysical Journal 822(2), p. L29, doi:10.3847/2041-8205/822/2/L29

Rebecca Jensen-Clem, Max Millar-Blanchaer, Dimitri Mawet, James R. Graham, J. Kent Wallace, Bruce Macintosh, Sasha Hinkley, Sloane J. Wiktorowicz, Marshall D. Perrin, Mark S. Marley, Michael P. Fitzgerald, Rebecca Oppenheimer, S. Mark Ammons, Fredrik T. Rantakyrö, Franck Marchis (2016) POINT SOURCE POLARIMETRY WITH THE GEMINI PLANET IMAGER: SENSITIVITY CHARACTERIZATION WITH T5.5 DWARF COMPANION HD 19467 B, The Astrophysical Journal 820(2), p. 111, doi:10.3847/0004-637X/820/2/111

Schuyler G. Wolff, Marshall Perrin, Maxwell A. Millar-Blanchaer, Eric L. Nielsen, Jason Wang, Andrew Cardwell, Jeffrey Chilcote, Ruobing Dong, Zachary H. Draper, Gaspard Duchêne, Michael P. Fitzgerald, Stephen J. Goodsell, Carol A. Grady, James R. Graham, Alexandra Z. Greenbaum, Markus Hartung, Pascale Hibon, Dean C. Hines, Li-Wei Hung, Paul Kalas, Bruce Macintosh, Franck Marchis, Christian Marois, Laurent Pueyo, Fredrik T. Rantakyrö, Glenn Schneider, Anand Sivaramakrishnan, Sloane J. Wiktorowicz (2016) THE PDS 66 CIRCUMSTELLAR DISK AS SEEN IN POLARIZED LIGHT WITH THE GEMINI PLANET IMAGER, The Astrophysical Journal 818(1), p. L15, doi:10.3847/2041-8205/818/1/L15

Lisa A. Poyneer, David W. Palmer, Bruce Macintosh, Dmitry Savransky, Naru Sadakuni, Sandrine Thomas, Jean-Pierre Véran, Katherine B. Follette, Alexandra Z. Greenbaum, S. Mark Ammons, Vanessa P. Bailey, Brian Bauman, Andrew Cardwell, Daren Dillon, Donald Gavel, Markus Hartung, Pascale Hibon, Marshall D. Perrin, Fredrik T. Rantakyrö, Anand Sivaramakrishnan, Jason J. Wang (2016) Performance of the Gemini Planet Imager’s adaptive optics system, Applied Optics 55(2), p. 323, doi:10.1364/AO.55.000323

2015

Eric L. Nielsen, Michael C. Liu, Zahed Wahhaj, Beth A. Biller, Thomas L. Hayward, Laird M. Close, Bruce Macintosh, Dmitry Savransky, Jason J. Wang, James R. Graham, Robert J. De Rosa, Abhijith Rajan (2015) Mapping the Distributions of Exoplanet Populations with NICI and GPI, Proceedings of the International Astronomical Union 10(S314), p. 220-225, doi:10.1017/S1743921315006572

Maxwell A. Millar-Blanchaer, James R. Graham, Laurent Pueyo, Paul Kalas, Rebekah I. Dawson, Jason Wang, Marshall D. Perrin, Dae-Sik moon, Bruce Macintosh, S. Mark Ammons, Travis Barman, Andrew Cardwell, Christine H. Chen, Eugene Chiang, Jeffrey Chilcote, Tara Cotten, Robert J. De Rosa, Zachary H. Draper, Jennifer Dunn, Gaspard Duchêne, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Stephen J. Goodsell, Alexandra Z. Greenbaum, Markus Hartung, Pascale Hibon, Sasha Hinkley, Patrick Ingraham, Rebecca Jensen-Clem, Quinn Konopacky, James E. Larkin, Douglas Long, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Katie M. Morzinski, Eric L. Nielsen, David W. Palmer, Rebecca Oppenheimer, Lisa Poyneer, Abhijith Rajan, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Naru Sadakuni, Leslie Saddlemyer, Adam C. Schneider, Anand Sivaramakrishnan, Remi Soummer, Sandrine Thomas, Gautam Vasisht, David Vega, J. Kent Wallace, Kimberly Ward-Duong, Sloane J. Wiktorowicz, Schuyler G. Wolff (2015) β PICTORIS’ INNER DISK IN POLARIZED LIGHT AND NEW ORBITAL PARAMETERS FOR β PICTORIS b, The Astrophysical Journal 811(1), p. 18, doi:10.1088/0004-637X/811/1/18

Thayne Currie, Carey M. Lisse, Marc Kuchner, Nikku Madhusudhan, Scott J. Kenyon, Christian Thalmann, Joseph Carson, John Debes (2015) DIRECT IMAGING AND SPECTROSCOPY OF A YOUNG EXTRASOLAR KUIPER BELT IN THE NEAREST OB ASSOCIATION, The Astrophysical Journal 807(1), p. L7, doi:10.1088/2041-8205/807/1/L7

Thayne Currie, Ryan Cloutier, Sean Brittain, Carol Grady, Adam Burrows, Takayuki Muto, Scott J. Kenyon, Marc J. Kuchner (2015) RESOLVING THE HD 100546 PROTOPLANETARY SYSTEM WITH THE GEMINI PLANET IMAGER: EVIDENCE FOR MULTIPLE FORMING, ACCRETING PLANETS, The Astrophysical Journal 814(2), p. L27, doi:10.1088/2041-8205/814/2/L27

Valerie A. Rapson, Joel H. Kastner, Maxwell A. Millar-Blanchaer, Ruobing Dong (2015) PEERING INTO THE GIANT-PLANET-FORMING REGION OF THE TW HYDRAE DISK WITH THE GEMINI PLANET IMAGER, The Astrophysical Journal 815(2), p. L26, doi:10.1088/2041-8205/815/2/L26

Li-Wei Hung, Gaspard Duchêne, Pauline Arriaga, Michael P. Fitzgerald, Jérôme Maire, Christian Marois, Maxwell A. Millar-Blanchaer, Sebastian Bruzzone, Abhijith Rajan, Laurent Pueyo, Paul G. Kalas, Robert J. De Rosa, James R. Graham, Quinn Konopacky, Schuyler G. Wolff, S. Mark Ammons, Christine H. Chen, Jeffrey K. Chilcote, Zachary H. Draper, Thomas M. Esposito, Benjamin Gerard, Stephen Goodsell, Alexandra Greenbaum, Pascale Hibon, Sasha Hinkley, Bruce Macintosh, Franck Marchis, Stanimir Metchev, Eric L. Nielsen, Rebecca Oppenheimer, Jennifer L. Patience, Marshall D. Perrin, Fredrik T. Rantakyrö, Anand Sivaramakrishnan, Jason J. Wang, Kimberly Ward-Duong, Sloane J. Wiktorowicz (2015) FIRST SCATTERED-LIGHT IMAGE OF THE DEBRIS DISK AROUND HD 131835 WITH THE GEMINI PLANET IMAGER, The Astrophysical Journal 815(1), p. L14, doi:10.1088/2041-8205/815/1/L14

Jason J. Wang, James R. Graham, Laurent Pueyo, Eric L. Nielsen, Max Millar-Blanchaer, Robert J. De Rosa, Paul Kalas, S. Mark Ammons, Joanna Bulger, Andrew Cardwell, Christine Chen, Eugene Chiang, Jeffrey K. Chilcote, René Doyon, Zachary H. Draper, Gaspard Duchêne, Thomas M. Esposito, Michael P. Fitzgerald, Stephen J. Goodsell, Alexandra Z. Greenbaum, Markus Hartung, Pascale Hibon, Sasha Hinkley, Li-Wei Hung, Patrick Ingraham, James E. Larkin, Bruce Macintosh, Jerome Maire, Franck Marchis, Christian Marois, Brenda C. Matthews, Katie M. Morzinski, Rebecca Oppenheimer, Jenny Patience, Marshall D. Perrin, Abhijith Rajan, Fredrik T. Rantakyrö, Naru Sadakuni, Andrew Serio, Anand Sivaramakrishnan, Rémi Soummer, Sandrine Thomas, Kimberly Ward-Duong, Sloane J. Wiktorowicz, Schuyler G. Wolff (2015) GEMINI PLANET IMAGER OBSERVATIONS OF THE AU MICROSCOPII DEBRIS DISK: ASYMMETRIES WITHIN ONE ARCSECOND, The Astrophysical Journal 811(2), p. L19, doi:10.1088/2041-8205/811/2/L19

B. Macintosh, J. R. Graham, T. Barman, R. J. De Rosa, Q. Konopacky, M. S. Marley, C. Marois, E. L. Nielsen, L. Pueyo, A. Rajan, J. Rameau, D. Saumon, J. J. Wang, J. Patience, M. Ammons, P. Arriaga, E. Artigau, S. Beckwith, J. Brewster, S. Bruzzone, J. Bulger, B. Burningham, A. S. Burrows, C. Chen, E. Chiang, J. K. Chilcote, R. I. Dawson, R. Dong, R. Doyon, Z. H. Draper, G. Duchêne, T. M. Esposito, D. Fabrycky, M. P. Fitzgerald, K. B. Follette, J. J. Fortney, B. Gerard, S. Goodsell, A. Z. Greenbaum, P. Hibon, S. Hinkley, T. H. Cotten, L.-W. Hung, P. Ingraham, M. Johnson-Groh, P. Kalas, D. Lafreniere, J. E. Larkin, J. Lee, M. Line, D. Long, J. Maire, F. Marchis, B. C. Matthews, C. E. Max, S. Metchev, M. A. Millar-Blanchaer, T. Mittal, C. V. Morley, K. M. Morzinski, R. Murray-Clay, R. Oppenheimer, D. W. Palmer, R. Patel, M. D. Perrin, L. A. Poyneer, R. R. Rafikov, F. T. Rantakyrö, E. L. Rice, P. Rojo, A. R. Rudy, J.-B. Ruffio, M. T. Ruiz, N. Sadakuni, L. Saddlemyer, M. Salama, D. Savransky, A. C. Schneider, A. Sivaramakrishnan, I. Song, R. Soummer, S. Thomas, G. Vasisht, J. K. Wallace, K. Ward-Duong, S. J. Wiktorowicz, S. G. Wolff, B. Zuckerman (2015) Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager, Science 350(6256), p. 64-67, doi:10.1126/science.aac5891

Paul G. Kalas, Abhijith Rajan, Jason J. Wang, Maxwell A. Millar-Blanchaer, Gaspard Duchene, Christine Chen, Michael P. Fitzgerald, Ruobing Dong, James R. Graham, Jennifer Patience, Bruce Macintosh, Ruth Murray-Clay, Brenda Matthews, Julien Rameau, Christian Marois, Jeffrey Chilcote, Robert J. De Rosa, René Doyon, Zachary H. Draper, Samantha Lawler, S. Mark Ammons, Pauline Arriaga, Joanna Bulger, Tara Cotten, Katherine B. Follette, Stephen Goodsell, Alexandra Greenbaum, Pascale Hibon, Sasha Hinkley, Li-Wei Hung, Patrick Ingraham, Quinn Konapacky, David Lafreniere, James E. Larkin, Douglas Long, Jérôme Maire, Franck Marchis, Stan Metchev, Katie M. Morzinski, Eric L. Nielsen, Rebecca Oppenheimer, Marshall D. Perrin, Laurent Pueyo, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Leslie Saddlemyer, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Rémi Soummer, Inseok Song, Sandrine Thomas, Gautam Vasisht, Kimberly Ward-Duong, Sloane J. Wiktorowicz, Schuyler G. Wolff (2015) DIRECT IMAGING OF AN ASYMMETRIC DEBRIS DISK IN THE HD 106906 PLANETARY SYSTEM, The Astrophysical Journal 814(1), p. 32, doi:10.1088/0004-637X/814/1/32

Robert J. De Rosa, Eric L. Nielsen, Sarah C. Blunt, James R. Graham, Quinn M. Konopacky, Christian Marois, Laurent Pueyo, Julien Rameau, Dominic M. Ryan, Jason J. Wang, Vanessa Bailey, Ashley Chontos, Daniel C. Fabrycky, Katherine B. Follette, Bruce Macintosh, Franck Marchis, S. Mark Ammons, Pauline Arriaga, Jeffrey K. Chilcote, Tara H. Cotten, René Doyon, Gaspard Duchêne, Thomas M. Esposito, Michael P. Fitzgerald, Benjamin Gerard, Stephen J. Goodsell, Alexandra Z. Greenbaum, Pascale Hibon, Patrick Ingraham, Mara Johnson-Groh, Paul G. Kalas, David Lafrenière, Jerome Maire, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Katie M. Morzinski, Rebecca Oppenheimer, Rahul I. Patel, Jennifer L. Patience, Marshall D. Perrin, Abhijith Rajan, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Debby Tran, Gautam Vasisht, Kimberly Ward-Duong, Schuyler G. Wolff (2015) ASTROMETRIC CONFIRMATION AND PRELIMINARY ORBITAL PARAMETERS OF THE YOUNG EXOPLANET 51 ERIDANI b WITH THE GEMINI PLANET IMAGER, The Astrophysical Journal 814(1), p. L3, doi:10.1088/2041-8205/814/1/L3

Zahed Wahhaj, Lucas A. Cieza, Dimitri Mawet, Bin Yang, Hector Canovas, Jozua de Boer, Simon Casassus, François Ménard, Matthias R. Schreiber, Michael C. Liu, Beth A. Biller, Eric L. Nielsen, Thomas L. Hayward (2015) Improving signal-to-noise in the direct imaging of exoplanets and circumstellar disks with MLOCI, Astronomy & Astrophysics 581, p. A24, doi:10.1051/0004-6361/201525837

Marshall D. Perrin, Gaspard Duchene, Max Millar-Blanchaer, Michael P. Fitzgerald, James R. Graham, Sloane J. Wiktorowicz, Paul G. Kalas, Bruce Macintosh, Brian Bauman, Andrew Cardwell, Jeffrey Chilcote, Robert J. De Rosa, Daren Dillon, René Doyon, Jennifer Dunn, Darren Erikson, Donald Gavel, Stephen Goodsell, Markus Hartung, Pascale Hibon, Patrick Ingraham, Daniel Kerley, Quinn Konapacky, James E. Larkin, Jérôme Maire, Franck Marchis, Christian Marois, Tushar Mittal, Katie M. Morzinski, B. R. Oppenheimer, David W. Palmer, Jennifer Patience, Lisa Poyneer, Laurent Pueyo, Fredrik T. Rantakyrö, Naru Sadakuni, Leslie Saddlemyer, Dmitry Savransky, Rémi Soummer, Anand Sivaramakrishnan, Inseok Song, Sandrine Thomas, J. Kent Wallace, Jason J. Wang, Schuyler G. Wolff (2015) POLARIMETRY WITH THE GEMINI PLANET IMAGER: METHODS, PERFORMANCE AT FIRST LIGHT, AND THE CIRCUMSTELLAR RING AROUND HR 4796A, The Astrophysical Journal 799(2), p. 182, doi:10.1088/0004-637X/799/2/182

2014

Markus Hartung, Tom Hayward, Les Saddlemyer, Lisa Poyneer, Andrew Cardwell, Chas Cavedoni, Myung Cho, Jeffrey K. Chilcote, Paul Collins, Daren Dillon, Ramon Galvez, Gaston Gausachs, Stephen Goodsell, Andrés Guesalaga, Pascale Hibon, James Larkin, Bruce Macintosh, Dave Palmer, Naru Sadakuni, Dmitry Savransky, Andrew Serio, Fredrik Rantakyrö, Kent Wallace (2014) On-sky vibration environment for the Gemini Planet Imager and mitigation effort, Enrico Marchetti, Laird M. Close, Jean-Pierre Véran (ed.), p. 91480N, doi:10.1117/12.2057200

Bruce A. Macintosh, Andre Anthony, Jenny Atwood, Brian Bauman, Andrew Cardwell, Kris Caputa, Jeffery Chilcote, Robert J. De Rosa, Daren Dillon, René Doyon, Jennifer Dunn, Darren Erickson, Michael P. Fitzgerald, Donald T. Gavel, Ramon Galvez, Stephen Goodsell, James Graham, Alexandra Z. Greenbaum, Markus Hartung, Pascale Hibon, Patrick Ingraham, Dan Kerley, Quinn Konopacky, Kathleen Labrie, James Larkin, Jerome Maire, Franck Marchis, Christian Marois, Max Millar-Blanchaer, Katie Morzinski, Arturo Nunez, Rebecca Oppenheimer, David Palmer, John Pazder, Marshall Perrin, Lisa A. Poyneer, Laurent Pueyo, Carlos Quiroz, Fredrik Rantakyro, Vlad Reshetov, Les Saddlemyer, Naru Sadakuni, Dmitry Savransky, Andrew Serio, Anand Sivaramakrishnan, Malcolm Smith, Remi Soummer, Sandrine Thomas, J. K. Wallace, Jason Wang, Jason Weiss, Sloane Wiktorowicz, Schuyler G. Wolff (2014) The Gemini planet imager: first light and commissioning, Enrico Marchetti, Laird M. Close, Jean-Pierre Véran (ed.), p. 91480J, doi:10.1117/12.2056709

Jeffrey Chilcote, Travis Barman, Michael P. Fitzgerald, James R. Graham, James E. Larkin, Bruce Macintosh, Brian Bauman, Adam S. Burrows, Andrew Cardwell, Robert J. De Rosa, Daren Dillon, René Doyon, Jennifer Dunn, Darren Erikson, Donald Gavel, Stephen J. Goodsell, Markus Hartung, Pascale Hibon, Patrick Ingraham, Paul Kalas, Quinn Konopacky, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Max Millar-Blanchaer, Katie Morzinski, Andrew Norton, Rebecca Oppenheimer, David Palmer, Jennifer Patience, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Fredrik T. Rantakyrö, Naru Sadakuni, Leslie Saddlemyer, Dmitry Savransky, Andrew Serio, Anand Sivaramakrishnan, Inseok Song, Rémi Soummer, Sandrine Thomas, J. Kent Wallace, Sloane Wiktorowicz, Schuyler Wolff (2014) THE FIRST H -BAND SPECTRUM OF THE GIANT PLANET β PICTORIS b, The Astrophysical Journal 798(1), p. L3, doi:10.1088/2041-8205/798/1/L3

Maddalena Reggiani, Sascha P. Quanz, Michael R. Meyer, Laurent Pueyo, Olivier Absil, Adam Amara, Guillem Anglada, Henning Avenhaus, Julien H. Girard, Carlos Carrasco Gonzalez, James Graham, Dimitri Mawet, Farzana Meru, Julien Milli, Mayra Osorio, Schuyler Wolff, Jose-Maria Torrelles (2014) DISCOVERY OF A COMPANION CANDIDATE IN THE HD 169142 TRANSITION DISK AND THE POSSIBILITY OF MULTIPLE PLANET FORMATION, The Astrophysical Journal 792(1), p. L23, doi:10.1088/2041-8205/792/1/L23

Patrick Ingraham, Mark S. Marley, Didier Saumon, Christian Marois, Bruce Macintosh, Travis Barman, Brian Bauman, Adam Burrows, Jeffrey K. Chilcote, Robert J. De Rosa, Daren Dillon, René Doyon, Jennifer Dunn, Darren Erikson, Michael P. Fitzgerald, Donald Gavel, Stephen J. Goodsell, James R. Graham, Markus Hartung, Pascale Hibon, Paul G. Kalas, Quinn Konopacky, James A. Larkin, Jérôme Maire, Franck Marchis, James McBride, Max Millar-Blanchaer, Katie M. Morzinski, Andrew Norton, Rebecca Oppenheimer, Dave W. Palmer, Jenny Patience, Marshall D. Perrin, Lisa A. Poyneer, Laurent Pueyo, Fredrik Rantakyrö, Naru Sadakuni, Leslie Saddlemyer, Dmitry Savransky, Rémi Soummer, Anand Sivaramakrishnan, Inseok Song, Sandrine Thomas, J. Kent Wallace, Sloane J. Wiktorowicz, Schuyler G. Wolff (2014) GEMINI PLANET IMAGER SPECTROSCOPY OF THE HR 8799 PLANETS c AND d, The Astrophysical Journal 794(1), p. L15, doi:10.1088/2041-8205/794/1/L15

Raphael Galicher, Julien Rameau, Mickael Bonnefoy, Jean-Loup Baudino, Thayne Currie, Anthony Boccaletti, Gael Chauvin, Anne-Marie Lagrange, Christian Marois (2014) Near-Infrared Detection and Characterization of the Exoplanet HD 95086 b with the Gemini Planet Imager, doi:10.1051/0004-6361/201423839

Dmitry Savransky, Sandrine J. Thomas, Lisa A. Poyneer, Jennifer Dunn, Bruce A. Macintosh, Naru Sadakuni, Daren Dillon, Stephen J. Goodsell, Markus Hartung, Pascale Hibon, Fredrik Rantakyrö, Andrew Cardwell, Andrew Serio (2014) Automated alignment and on-sky performance of the Gemini planet imager coronagraph, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 914740, doi:10.1117/12.2055752

Pascale Hibon, Sandrine Thomas, Jennifer Dunn, Jennifer Atwood, Leslie Saddlemyer, Naru Sadakuni, Stephen Goodsell, Bruce Macintosh, James Graham, Marshall Perrin, Fredrik Rantakyro, Vincent Fesquet, Andrew Serio, Carlos Quiroz, Andrew Cardwell, Gaston Gausachs, Dmitry Savransky, Dan Kerley, Markus Hartung, Ramon Galvez, Kayla Hardie (2014) Characterization of the atmospheric dispersion corrector of the Gemini planet imager, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 91474U, doi:10.1117/12.2055545

Jennifer Dunn, Dan Kerley, Leslie Saddlemyer, Malcolm Smith, Robert Wooff, Dmitry Savransky, David Palmer, Bruce Macintosh, Jason Weiss, Carlos Quiroz, Fredrik T. Rantakyrö, Stephen J. Goodsell (2014) Gemini planet imager one button approach, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 914750, doi:10.1117/12.2057231

Timothy J. Rodigas, Katherine B. Follette, Alycia Weinberger, Laird Close, Dean C. Hines (2014) POLARIZED LIGHT IMAGING OF THE HD 142527 TRANSITION DISK WITH THE GEMINI PLANET IMAGER: DUST AROUND THE CLOSE-IN COMPANION, The Astrophysical Journal 791(2), p. L37, doi:10.1088/2041-8205/791/2/L37

Fredrik T. Rantakyrö, Andrew Cardwell, Jeffrey Chilcote, Jennifer Dunn, Stephen Goodsell, Pascale Hibon, Bruce Macintosh, Carlos Quiroz, Marshall D. Perrin, Naru Sadakuni, Leslie Saddlemyer, Dmitry Savransky, Andrew Serio, Claudia Winge, Ramon Galvez, Gaston Gausachs, Kayla Hardie, Markus Hartung, Javier Luhrs, Lisa Poyneer, Sandrine Thomas (2014) Gemini planet imager integration to the Gemini South telescope software environment, Alison B. Peck, Chris R. Benn, Robert L. Seaman (ed.), p. 91492B, doi:10.1117/12.2055654

Marshall D. Perrin, Jérôme Maire, Patrick Ingraham, Dmitry Savransky, Max Millar-Blanchaer, Schuyler G. Wolff, Jean-Baptiste Ruffio, Jason J. Wang, Zachary H. Draper, Naru Sadakuni, Christian Marois, Abhijith Rajan, Michael P. Fitzgerald, Bruce Macintosh, James R. Graham, René Doyon, James E. Larkin, Jeffrey K. Chilcote, Stephen J. Goodsell, David W. Palmer, Kathleen Labrie, Mathilde Beaulieu, Robert J. De Rosa, Alexandra Z. Greenbaum, Markus Hartung, Pascale Hibon, Quinn Konopacky, David Lafreniere, Jean-Francois Lavigne, Franck Marchis, Jenny Patience, Laurent Pueyo, Fredrik T. Rantakyrö, Rémi Soummer, Anand Sivaramakrishnan, Sandrine Thomas, Kimberly Ward-Duong, Sloane Wiktorowicz (2014) Gemini Planet Imager observational calibrations I: Overview of the GPI data reduction pipeline, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 91473J, doi:10.1117/12.2055246

Zachary H. Draper, Christian Marois, Schuyler Wolff, Marshall Perrin, Patrick J. Ingraham, Jean-Baptiste Ruffio, Fredrik T. Rantakyro, Markus Hartung, Stephen J. Goodsell (2014) Gemini planet imager observational calibrations IX: least-squares inversion flux extraction, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 91474Z, doi:10.1117/12.2057156

Patrick Ingraham, Jean-Baptiste Ruffio, Marshall D. Perrin, Schuyler G. Wolff, Zachary H. Draper, Jerome Maire, Franck Marchis, Vincent Fesquet (2014) Gemini planet imager observational calibrations III: empirical measurement methods and applications of high-resolution microlens PSFs, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 91477K, doi:10.1117/12.2055283

Patrick Ingraham, Marshall D. Perrin, Naru Sadakuni, Jean-Baptiste Ruffio, Jérôme Maire, Jeff Chilcote, James Larkin, Franck Marchis, Raphael Galicher, Jason Weiss (2014) Gemini planet imager observational calibrations II: detector performance and calibration, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 91477O, doi:10.1117/12.2057437

Sloane J. Wiktorowicz, Max Millar-Blanchaer, Marshall D. Perrin, James R. Graham, Michael P. Fitzgerald, Jérôme Maire, Patrick Ingraham, Dmitry Savransky, Bruce A. Macintosh, Sandrine J. Thomas, Jeffrey K. Chilcote, Zachary H. Draper, Inseok Song, Andrew Cardwell, Stephen J. Goodsell, Markus Hartung, Pascale Hibon, Fredrik Rantakyrö, Naru Sadakuni (2014) Gemini planet imager observational calibrations VII: on-sky polarimetric performance of the Gemini planet imager, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 914783, doi:10.1117/12.2056616

Quinn M. Konopacky, Sandrine J. Thomas, Bruce A. Macintosh, Daren Dillon, Naru Sadakuni, Jérôme Maire, Michael Fitzgerald, Sasha Hinkley, Paul Kalas, Thomas Esposito, Christian Marois, Patrick J. Ingraham, Franck Marchis, Marshall D. Perrin, James R. Graham, Jason J. Wang, Robert J. De Rosa, Katie Morzinski, Laurent Pueyo, Jeffrey K. Chilcote, James E. Larkin, Daniel Fabrycky, Stephen J. Goodsell, Ben R. Oppenheimer, Jenny Patience, Leslie Saddlemyer, Anand Sivaramakrishnan (2014) Gemini planet imager observational calibrations V: astrometry and distortion, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 914784, doi:10.1117/12.2056646

Jérôme Maire, Patrick J. Ingraham, Rob J. De Rosa, Marshall D. Perrin, Abhijith Rajan, Dmitry Savransky, Jason J. Wang, Jean-Baptiste Ruffio, Schuyler G. Wolff, Jeffrey K. Chilcote, René Doyon, James R. Graham, Alexandra Z. Greenbaum, Quinn M. Konopacky, James E. Larkin, Bruce A. Macintosh, Christian Marois, Max Millar-Blanchaer, Jennifer Patience, Laurent A. Pueyo, Anand Sivaramakrishnan, Sandrine J. Thomas, Jason L. Weiss (2014) Gemini planet imager observational calibrations VI: photometric and spectroscopic calibration for the integral field spectrograph, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 914785, doi:10.1117/12.2056732

Alexandra Z. Greenbaum, Anthony Cheetham, Anand Sivaramakrishnan, Peter Tuthill, Barnaby Norris, Laurent Pueyo, Naru Sadakuni, Fredrik Rantakyrö, Pascale Hibon, Stephen Goodsell, Markus Hartung, Andrew Serio, Andrew Cardwell, Lisa Poyneer, Bruce Macintosh, Dmitry Savransky, Marshall D. Perrin, Schuyler Wolff, Patrick Ingraham, Sandrine Thomas (2014) Gemini planet imager observational calibrations X: non-redundant masking on GPI, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 91477B, doi:10.1117/12.2056429

Schuyler G. Wolff, Marshall D. Perrin, Jérôme Maire, Patrick J. Ingraham, Fredrik T. Rantakyrö, Pascale Hibon (2014) Gemini planet imager observational calibrations IV: wavelength calibration and flexure correction for the integral field spectograph, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami (ed.), p. 91477H, doi:10.1117/12.2055678

Bruce Macintosh, James R. Graham, Patrick Ingraham, Quinn Konopacky, Christian Marois, Marshall Perrin, Lisa Poyneer, Brian Bauman, Travis Barman, Adam S. Burrows, Andrew Cardwell, Jeffrey Chilcote, Robert J. De Rosa, Daren Dillon, Rene Doyon, Jennifer Dunn, Darren Erikson, Michael P. Fitzgerald, Donald Gavel, Stephen Goodsell, Markus Hartung, Pascale Hibon, Paul Kalas, James Larkin, Jerome Maire, Franck Marchis, Mark S. Marley, James McBride, Max Millar-Blanchaer, Katie Morzinski, Andrew Norton, B. R. Oppenheimer, David Palmer, Jennifer Patience, Laurent Pueyo, Fredrik Rantakyro, Naru Sadakuni, Leslie Saddlemyer, Dmitry Savransky, Andrew Serio, Remi Soummer, Anand Sivaramakrishnan, Inseok Song, Sandrine Thomas, J. Kent Wallace, Sloane Wiktorowicz, Schuyler Wolff (2014) First light of the Gemini Planet Imager, Proceedings of the National Academy of Sciences 111(35), p. 12661-12666, doi:10.1073/pnas.1304215111

2013

Max Millar-Blanchaer, Sloane J. Wiktorowicz, Marshall D. Perrin, James R. Graham, Sandrine J. Thomas, Daren Dillon, Michael P. Fitzgerald, Jérome Maire, Bruce Macintosh, Stephen J. Goodsell (2013) Polarimetry with the Gemini Planet Imager: Instrument Characterization and Future Science, Proceedings of the International Astronomical Union 8(S299), p. 58-59, doi:10.1017/S1743921313007862

Dmitry Savransky, Bruce A. Macintosh, James Graham, Quinn M. Konopacky (2013) Campaign Scheduling and Analysis for the Gemini Planet Imager, Proceedings of the International Astronomical Union 8(S299), p. 68-69, doi:10.1017/S1743921313007916

Dmitry Savransky, Sandrine J. Thomas, Lisa A. Poyneer, Bruce A. Macintosh (2013) Computer vision applications for coronagraphic optical alignment and image processing, Applied Optics 52(14), p. 3394, doi:10.1364/AO.52.003394

Alexandra Z. Greenbaum, Anand Sivaramakrishnan, Laurent Pueyo, Patrick Ingraham, Sandrine Thomas, Schuyler Wolff, Marshall D. Perrin, Barnaby Norris, Peter G. Tuthill (2013) Wavelength calibration and closure phases with the Gemini Planet Imager IFS using its non-redundant mask, Stuart Shaklan (ed.), p. 88641V, doi:10.1117/12.2023723

2012

S. Thomas, L. Poyneer, D. Savransky, B. Macintosh, M. Hartung, D. Dillon, D. Gavel, Jennifer Dunn, K. Wallace, D. Palmer, Robert De Rosa (2012) Wavefront sensing and correction with the Gemini Planet Imager, Brent L. Ellerbroek, Enrico Marchetti, Jean-Pierre Véran (ed.), p. 844714-844714-12, doi:10.1117/12.926680

Bruce A. Macintosh, Andre Anthony, Jennifer Atwood, Nicolas Barriga, Brian Bauman, Kris Caputa, Jeffery Chilcote, Daren Dillon, René Doyon, Jennifer Dunn, Donald T. Gavel, Ramon Galvez, Stephen J. Goodsell, James R. Graham, Markus Hartung, Joshua Isaacs, Dan Kerley, Quinn Konopacky, Kathleen Labrie, James E. Larkin, Jerome Maire, Christian Marois, Max Millar-Blanchaer, Arturo Nunez, Ben R. Oppenheimer, David W. Palmer, John Pazder, Marshall Perrin, Lisa A. Poyneer, Carlos Quirez, Frederik Rantakyro, Vlad Reshtov, Leslie Saddlemyer, Naru Sadakuni, Dmitry Savransky, Anand Sivaramakrishnan, Malcolm Smith, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Jason Weiss, Sloane Wiktorowicz (2012) The Gemini Planet Imager: integration and status, Ian S. McLean, Suzanne K. Ramsay, Hideki Takami (ed.), p. 84461U, doi:10.1117/12.926721

Jeffrey K. Chilcote, James E. Larkin, Jérôme Maire, Marshall D. Perrin, Michael P. Fitzgerald, René Doyon, Simon Thibault, Brian Bauman, Bruce A. Macintosh, James R. Graham, Les Saddlemyer (2012) Performance of the integral field spectrograph for the Gemini Planet Imager, Ian S. McLean, Suzanne K. Ramsay, Hideki Takami (ed.), p. 84468W, doi:10.1117/12.925790

Sloane J. Wiktorowicz, Max Millar-Blanchaer, Marshall D. Perrin, James R. Graham, Sandrine J. Thomas, Daren Dillon, Michael P. Fitzgerald, Jérôme Maire, Bruce A. Macintosh, Stephen J. Goodsell (2012) Polarimetric performance of the Gemini Planet Imager, Ian S. McLean, Suzanne K. Ramsay, Hideki Takami (ed.), p. 844691, doi:10.1117/12.925239

Alexis Hill, Steven Cornelissen, Daren Dillon, Charlie Lam, Dave Palmer, Les Saddlemyer (2012) Flexure mount for a MEMS deformable mirror for the Gemini Planet Imager, Ramón Navarro, Colin R. Cunningham, Eric Prieto (ed.), p. 84500H, doi:10.1117/12.926842

John Pazder, Brian Bauman, Daren Dillon, Murray Fletcher, Jean Lacoursière, Vlad Reshetov (2012) The optical alignment of the Gemini planet imager adaptive optics bench, Ramón Navarro, Colin R. Cunningham, Eric Prieto (ed.), p. 845058, doi:10.1117/12.925866

Jérôme Maire, Marshall D. Perrin, René Doyon, Jeffrey Chilcote, James E. Larkin, Jason L. Weiss, Christian Marois, Quinn M. Konopacky, Maxwell Millar-Blanchaer, James R. Graham, Jennifer Dunn, Raphael Galicher, Franck Marchis, Sloane J. Wiktorowicz, Kathleen Labrie, Sandrine J. Thomas, Stephen J. Goodsell, Fredrik T. Rantakyro, David W. Palmer, Bruce A. Macintosh (2012) Test results for the Gemini Planet Imager data reduction pipeline, Nicole M. Radziwill, Gianluca Chiozzi (ed.), p. 84513G, doi:10.1117/12.926202

2011

Lisa A. Poyneer, Brian Bauman, Steven Cornelissen, Joshua Isaacs, Steven Jones, Bruce A. Macintosh, David W. Palmer (2011) The use of a high-order MEMS deformable mirror in the Gemini Planet Imager, Scot S. Olivier, Thomas G. Bifano, Joel A. Kubby (ed.), p. 793104, doi:10.1117/12.876496

James McBride, James R. Graham, Bruce Macintosh, Steven V. W. Beckwith, Christian Marois, Lisa A. Poyneer, Sloane J. Wiktorowicz (2011) Experimental Design for the Gemini Planet Imager, Publications of the Astronomical Society of the Pacific 123(904), p. 692-708, doi:10.1086/660733

S. Thibault (2011) Cryogenic lens design case study: Gemini Planet Imager spectrograph, R. Barry Johnson, Virendra N. Mahajan, Simon Thibault (ed.), p. 812802, doi:10.1117/12.894944

Sandrine J. Thomas, Lisa Poyneer, Rob De Rosa, Bruce Macintosh, Daren Dillon, James K. Wallace, David Palmer, Donald Gavel, Brian Bauman, Leslie Saddlemyer, Stephen Goodsell (2011) Integration and test of the Gemini Planet Imager, Robert K. Tyson, Michael Hart (ed.), p. 814903, doi:10.1117/12.893728

2010

Tiffany Kataria, Michal Simon (2010) DETECTABILITY OF EXOPLANETS IN THE β PIC MOVING GROUP WITH THE GEMINI PLANET IMAGER, The Astronomical Journal 140(1), p. 206-214, doi:10.1088/0004-6256/140/1/206

Joseph R. Maly, Darren Erickson, Timothy J. Pargett (2010) Vibration suppression for the Gemini Planet Imager, Larry M. Stepp, Roberto Gilmozzi, Helen J. Hall (ed.), p. 77331F, doi:10.1117/12.857699

Jérôme Maire, Marshall D. Perrin, René Doyon, Etienne Artigau, Jennifer Dunn, Donald T. Gavel, James R. Graham, David Lafrenière, James E. Larkin, Jean-François Lavigne, Bruce A. Macintosh, Christian Marois, Ben Oppenheimer, David W. Palmer, Lisa A. Poyneer, Simon Thibault, Jean-Pierre Véran (2010) Data reduction pipeline for the Gemini Planet Imager, Ian S. McLean, Suzanne K. Ramsay, Hideki Takami (ed.), p. 773531, doi:10.1117/12.858028

Anand Sivaramakrishnan, Rémi Soummer, Ben R. Oppenheimer, G. Lawrence Carr, Jacob L. Mey, Doug Brenner, Charles W. Mandeville, Neil Zimmerman, Bruce A. Macintosh, James R. Graham, Les Saddlemyer, Brian Bauman, Alexis Carlotti, Laurent Pueyo, Peter G. Tuthill, Christophe Dorrer, Robin Roberts, Alexandra Greenbaum (2010) Gemini Planet Imager coronagraph testbed results, Ian S. McLean, Suzanne K. Ramsay, Hideki Takami (ed.), p. 773586, doi:10.1117/12.858623

J. Kent Wallace, Rick S. Burruss, Randall D. Bartos, Thang Q. Trinh, Laurent A. Pueyo, Santos F. Fregoso, John R. Angione, J. Chris Shelton (2010) The Gemini Planet Imager calibration wavefront sensor instrument, Brent L. Ellerbroek, Michael Hart, Norbert Hubin, Peter L. Wizinowich (ed.), p. 77365D, doi:10.1117/12.858269

S. Thibault, P. Vallée, E. Artigau, J. Maire, R. Doyon, J.-F. Lavigne, J. Larkin (2010) GPI: cryogenic spectrograph optics performances, Ian S. McLean, Suzanne K. Ramsay, Hideki Takami (ed.), p. 77351N, doi:10.1117/12.857897

Marshall D. Perrin, James R. Graham, James E. Larkin, Sloane Wiktorowicz, Jérôme Maire, Simon Thibault, Michael P. Fitzgerald, René Doyon, Bruce A. Macintosh, Donald T. Gavel, Ben R. Oppenheimer, David W. Palmer, Leslie Saddlemyer, J. Kent Wallace (2010) Imaging polarimetry with the Gemini Planet Imager, Brent L. Ellerbroek, Michael Hart, Norbert Hubin, Peter L. Wizinowich (ed.), p. 77365R, doi:10.1117/12.857741

2009

Eric Cady, Bruce Macintosh, N. Jeremy Kasdin, Rémi Soummer (2009) SHAPED PUPIL DESIGN FOR THE GEMINI PLANET IMAGER, The Astrophysical Journal 698(1), p. 938-943, doi:10.1088/0004-637X/698/1/938

Rémi Soummer, Anand Sivaramakrishnan, Ben R. Oppenheimer, Robin Roberts, Douglas Brenner, Alexis Carlotti, Laurent Pueyo, Bruce Macintosh, Brian Bauman, Les Saddlemyer, David Palmer, Darren Erickson, Christophe Dorrer, Kris Caputa, Christian Marois, Kent Wallace, Emily Griffiths, Jacob Mey (2009) The Gemini Planet Imager coronagraph testbed, Stuart B. Shaklan (ed.), p. 74400R, doi:10.1117/12.826700

J. Kent Wallace, Rick Burruss, Laurent Pueyo, Remi Soummer, Chris Shelton, Randall Bartos, Felipe Fregoso, Bijan Nemati, Paul Best, John Angione (2009) The Gemini Planet Imager calibration testbed, Stuart B. Shaklan (ed.), p. 74400S, doi:10.1117/12.826525

Anand Sivaramakrishnan, Rémi Soummer, G. Lawrence Carr, Christophe Dorrer, Allen Bolognesi, Neil Zimmerman, Ben R. Oppenheimer, Robin Roberts, Alexandra Greenbaum (2009) Calibrating IR optical densities for the Gemini Planet Imager extreme adaptive optics coronagraph apodizers, Stuart B. Shaklan (ed.), p. 74401C, doi:10.1117/12.826955

2008

Lisa A. Poyneer, Daren Dillon (2008) MEMS adaptive optics for the Gemini Planet Imager: control methods and validation, Scot S. Olivier, Thomas G. Bifano, Joel A. Kubby (ed.), p. 68880H, doi:10.1117/12.772754

Vlad Reshetov, Joeleff Fitzsimmons (2008) Design of high-resolution variable size spatial filter for Gemini Planet Imager using flexure elements, Eli Atad-Ettedgui, Dietrich Lemke (ed.), p. 701856, doi:10.1117/12.789515

Alexis Hill, Darren Erickson, Joeleff Fitzsimmons, Paul Bierden, Steven Cornelissen, Dave Palmer (2008) Stable flexure mounting of a MEMS deformable mirror for the GPI Planet Imager, Eli Atad-Ettedgui, Dietrich Lemke (ed.), p. 70181F, doi:10.1117/12.789408

Christian Marois, Bruce Macintosh, Rémi Soummer, Lisa Poyneer, Brian Bauman (2008) An end-to-end polychromatic Fresnel propagation model of GPI, Norbert Hubin, Claire E. Max, Peter L. Wizinowich (ed.), p. 70151T, doi:10.1117/12.789899

Bruce A. Macintosh, James R. Graham, David W. Palmer, René Doyon, Jennifer Dunn, Donald T. Gavel, James Larkin, Ben Oppenheimer, Les Saddlemyer, Anand Sivaramakrishnan, J. Kent Wallace, Brian Bauman, Darren A. Erickson, Christian Marois, Lisa A. Poyneer, Remi Soummer (2008) The Gemini Planet Imager: from science to design to construction, Norbert Hubin, Claire E. Max, Peter L. Wizinowich (ed.), p. 701518, doi:10.1117/12.788083

J. Kent Wallace, John Angione, Randall Bartos, Paul Best, Rick Burruss, Felipe Fregoso, B. Martin Levine, Bijan Nemati, Michael Shao, Chris Shelton (2008) Post-coronagraph wavefront sensor for Gemini Planet Imager, Norbert Hubin, Claire E. Max, Peter L. Wizinowich (ed.), p. 70156N, doi:10.1117/12.787258

Christian Marois, Bruce Macintosh, Rémi Soummer, Lisa Poyneer, Brian Bauman (2008) An end-to-end polychromatic Fresnel propagation model of GPI, Norbert Hubin, Claire E. Max, Peter L. Wizinowich (ed.), p. 70151T, doi:10.1117/12.789899

2007

Bruce Macintosh, James Graham, David Palmer, Rene Doyon, Don Gavel, James Larkin, Ben Oppenheimer, Leslie Saddlemyer, J. Kent Wallace, Brian Bauman, Darren Erikson, Lisa Poyneer, Anand Sivaramakrishnan, Rémi Soummer, Jean-Pierre Veran (2007) Adaptive optics for direct detection of extrasolar planets: the Gemini Planet Imager, Comptes Rendus Physique 8(3-4), p. 365-373, doi:10.1016/j.crhy.2007.04.007

James R. Graham, Bruce Macintosh, Rene Doyon, Don Gavel, James Larkin, Marty Levine, Ben Oppenheimer, David Palmer, Les Saddlemyer, Anand Sivaramakrishnan, Jean-Pierre Veran, Kent Wallace (2007) Ground-Based Direct Detection of Exoplanets with the Gemini Planet Imager (GPI)

2006

Lisa A. Poyneer, Jean-Pierre Véran, Daren Dillon, Scott Severson, Bruce A. Macintosh (2006) Wavefront control for the Gemini Planet Imager, p. 62721N, doi:10.1117/12.672328

Bruce Macintosh, James Graham, David Palmer, Rene Doyon, Don Gavel, James Larkin, Ben Oppenheimer, Leslie Saddlemyer, J. Kent Wallace, Brian Bauman, Julia Evans, Darren Erikson, Katie Morzinski, Donald Phillion, Lisa Poyneer, Anand Sivaramakrishnan, Remi Soummer, Simon Thibault, Jean-Pierre Veran (2006) The Gemini Planet Imager, p. 62720L, doi:10.1117/12.672430

2005

Rémi Soummer, Claude Aime, André Ferrari, Anand Sivaramakrishnan, Ben R. Oppenheimer, Russell Makidon, Bruce Macintosh (2005) Apodized Pupil Lyot Coronagraphs: Concepts and application to the Gemini Planet Imager, Proceedings of the International Astronomical Union 1(C200), p. 367-372, doi:10.1017/S1743921306009604

• Gemini Observatory press release
• Keck Observatory press release  
• UC Berkeley press release
• SETI Institute press release
• STSCI news release
• Stony Brook press release
• University of Arizona press release

Press-releases published on January 7th 2014

• Gemini Observatory

Gemini Planet Imager First Light!
http://www.gemini.edu/node/12113

• LLNL

Out of this world first light images emerge from Gemini Planet Imager
https://www.llnl.gov/news/newsreleases/2014/Jan/NR-14-01-01.html#.Usw_Z2RDtlM

• STSCI

STScI Astronomers Help Develop and Operate World’s Most Powerful Planet Finder
http://hubblesite.org/newscenter/archive/releases/2014/08/full/

• SETI Institute

World’s Most Powerful Planet Finder Turns its Eye to the Sky
http://www.seti.org/seti-institute/press-release/worlds-most-powerful-planet-finder-gemini-planet-imager-first-light-images

• University of Montreal (in French)

L’imageur d’exoplanètes le plus puissant au monde entame sa mission
http://www.nouvelles.umontreal.ca/recherche/sciences-technologies/20140107-limageur-dexoplanetes-le-plus-puissant-au-monde-entame-sa-mission.html

• AMNH

Museum-Built Device Helping Astronomers Search for Exoplanets
http://www.amnh.org/explore/news-blogs/research-posts/museum-built-device-helping-astronomers-search-for-exoplanets

• ASU

ASU professor, students part of Gemini Planet Imager team
https://asunews.asu.edu/20140107-gemini-planet-imager?utm_source=twitterfeed&utm_medium=twitter

• Gemini Obs-SETI (in Spanish)

El Espectrógrafo y Captador de Imágenes más poderoso del Mundo mira al cielo: la Primera Luz del Captador de Imágenes de Planetas de Gemini
http://www.seti.org/seti-institute/press-release/el-espectr%C3%B3grafo-y-captador-de-im%C3%A1genes-m%C3%A1s-poderoso-del-mundo-mira-al

• UCSC

World’s most powerful exoplanet camera looks skyward
http://news.ucsc.edu/2014/01/planet-imager.html

• JPL

Powerful Planet Finder Turns Its Eye to the Sky
http://www.jpl.nasa.gov/news/news.php?release=2014-008

[ADD IMAGES]

Details 

 American Museum of Natural History (AMNH): AMNH was leading the design and testing of GPI’s apodized-pupil Lyot coronagraph and part of the EPO.

 Arizona State University: This university is hosting a team in charge of the target selection

 Dunlap Institute of the University of Toronto: The team at Dunlap Institute is providing its expertise in data-processing

 Gemini Observatory: Gemini Observatory is leading the on-sky commissioning of the GPI instrument

 Herzberg Institute of Astrophysics (HIA): Canada’s Herzberg Institute was responsible for the opto-mechanical structure (OMSS) of GPI and the top-level computer (TLC) that connects the subsystems to each other and the observatory. HIA is also collaborating on control algorithms for the AO system.

 Jet Propulsion Laboratory (JPL): JPL was responsible for the precision infrared wavefront-calibration system.

 Lawrence Livermore National Laboratory (LLNL): LLNL is the lead institution for the  GPI instrument, responsible for the overall design and project management, and the real-time adaptive optics system.

 Lowell Observatory:The team at Lowell Observatory is providing its expertise in modeling exoplanet atmospheres

NASA Ames: NASA Ames is co-leading the theory effort of the campaign by developing and providing models of exoplanets.

 SETI Institute: The SETI Institute is co-leading the Education and Public Outreach effort and in charge of setting up and maintaining the remote control room facility. SETI Institute is the lead institution for the GPIES campaign

STSCI:The Space telescope Institute is providing the data analysis pipeline to extract planetary signals from GPI data

Universite de Montreal: University de Montreal is providing the data analysis pipeline to extract planetary signals from GPI data, and collaborated with UCLA on the design of the spectrograph.

 University of California, Berkeley (UCB): Several science team members are hosted at this university

 University of California, Los Angeles (UCLA): The Infrared Instrumentation Laboratory was responsible for the construction of the GPI science instrument, a near-IR integral field spectrograph and the science team provides expertise in debris disk imaging and polarimetry

 University of California, Santa Cruz (UCSC): GPI integration and testing has been taken place since 2010 at the UC Santa Cruz Laboratory for Adaptive Optics. A team is providing its expertise in modeling exoplanet atmospheres

 University of Georgia: This university is hosting a team in charge of the target selection

The GPIES team is led by the Principal Investigator Bruce Macintosh assisted by several Lead co-Investigators including James R. Graham, Travis Barman, Rene Doyon, Daniel Fabrycky, Michael Fitzgerald, Paul Kalas, Quinn Konopacky, Franck Marchis, Mark Marley, Christian Marois,Jennifer Patience, Marshall Perrin, Ben Oppenheimer and Inseok Song. The entire team is composed of ~50 investigators, including several postdoctoral fellows and graduate students, from universities and research centers located in the U.S.A., U.K., Canada, Australia, Argentina, Brazil and Chile.

The team meets regularly through the GPIES Science meetings whose first session was organized at the SETI Institute on October 11-13 2011, and the second one at the University of Toronto on June 13-14 2012. These meeting give an opportunity to the team to discuss the progress on the integration of instrument, design the observing campaign, organize the data processing and analysis pipeline, discuss the latest results in the field of exoplanets.

The picture below shows the attendees at the first GPIES Science Workshop in June 2011. All members of the GPIES team have read and agree to abide by the policies set forth in the Gemini Project Policies Document. We committed to releasing fully processed images, including speckle suppression by our standard pipeline, in incremental releases approximately 18 months after the campaign begins.
Group picture of the June 2011 GPIES Science Meeting (Credit: SETI Institute)

Group picture of the June 2011 GPIES Science Meeting (Credit: SETI Institute)

These are 5-sigma contrast levels achievable with different wavefront sensor sensitivity levels and one-hour integrations. The simulations are done over two R = 45 spectral channels, where the central wavelength is 1.65 microns and SDI has been applied over the 1.579-1.624 micron region. The dramatic improvement in contrast up to about 0.2 arcsec separation is due to speckle suppression. Click on the image to magnify.

The combination of ADI (angular differential imaging) and SDI (spectral differential imaging) speckle suppression techniques greatly improves the contrast achievable with GPI. Contrast depends strongly on the performance of the wavefront sensor: for a star with a given I magnitude, a wavefront sensor that can lock on I = 9 stars will perform much better than one that requires I = 5 stars. Contrast also depends on the spectral type of the target star: since H band data will be taken, later spectral types will be brighter in H band than earlier spectral types for the same I magnitude.