J
James R. Graham
Researcher at University of California, Berkeley
Publications - 388
Citations - 22526
James R. Graham is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Galaxy & Stars. The author has an hindex of 81, co-authored 380 publications receiving 21488 citations. Previous affiliations of James R. Graham include UCB & Space Telescope Science Institute.
Papers
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Journal ArticleDOI
Optical Images of an Exosolar Planet 25 Light-Years from Earth
Paul Kalas,James R. Graham,Eugene Chiang,Michael P. Fitzgerald,Mark Clampin,Edwin S. Kite,Karl R. Stapelfeldt,Christian Marois,John Krist +8 more
TL;DR: Optical observations of an exoplanet candidate, Fomalhaut b, show that the planet's mass is at most three times that of Jupiter; a higher mass would lead to gravitational disruption of the belt, matching predictions of its location.
Proceedings ArticleDOI
Design and development of NIRSPEC: a near-infrared echelle spectrograph for the Keck II telescope
Ian S. McLean,Eric E. Becklin,Oddvar O. Bendiksen,George Brims,John Canfield,Donald F. Figer,James R. Graham,Jonah Hare,Fred Lacayanga,James E. Larkin,Samuel B. Larson,Nancy G. Levenson,Nick Magnone,Harry I. Teplitz,Woon Wong +14 more
TL;DR: The NIRSPEC, a near-IR echelle spectrograph for the Keck II 10-meter telescope is described in this paper, which employs diamond-machined metal optics and state-of-the-art IR array detectors for high throughput and powerful user-friendly software for ease of use.
Journal ArticleDOI
First light of the Gemini Planet Imager
Bruce Macintosh,Bruce Macintosh,James R. Graham,Patrick Ingraham,Quinn Konopacky,Christian Marois,Marshall D. Perrin,Lisa Poyneer,Brian J. Bauman,Travis Barman,Adam Burrows,Andrew Cardwell,Jeffrey Chilcote,Robert J. De Rosa,Daren Dillon,René Doyon,Jennifer Dunn,Darren Erikson,Michael P. Fitzgerald,Donald T. Gavel,Stephen J. Goodsell,Markus Hartung,Pascale Hibon,Paul Kalas,James E. Larkin,Jérôme Maire,Franck Marchis,Mark S. Marley,James McBride,Max Millar-Blanchaer,Katie M. Morzinski,Andrew Norton,Ben R. Oppenheimer,David Palmer,Jennifer Patience,Laurent Pueyo,Fredrik T. Rantakyrö,Naru Sadakuni,Leslie Saddlemyer,Dmitry Savransky,Andrew Serio,Rémi Soummer,Anand Sivaramakrishnan,Anand Sivaramakrishnan,Inseok Song,Sandrine Thomas,J. Kent Wallace,Sloane Wiktorowicz,Schuyler Wolff +48 more
TL;DR: Observations ofBeta Pictoris clearly detect the planet, Beta Pictoris b, in a single 60-s exposure with minimal postprocessing, and fitting the Keplerian orbit of Beta Pic b using the new position together with previous astrometry gives a factor of 3 improvement in most parameters over previous solutions.
Journal ArticleDOI
Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager
Bruce Macintosh,Bruce Macintosh,James R. Graham,Travis Barman,R. J. De Rosa,Quinn Konopacky,Mark S. Marley,Christian Marois,Christian Marois,Eric L. Nielsen,Laurent Pueyo,Abhijith Rajan,Julien Rameau,Didier Saumon,Jason J. Wang,Jennifer Patience,Mark Ammons,Pauline Arriaga,Étienne Artigau,Steven V. W. Beckwith,J. Brewster,Sebastian Bruzzone,Joanna Bulger,Joanna Bulger,Ben Burningham,Ben Burningham,Adam Burrows,Christine Chen,Eugene Chiang,Jeffrey Chilcote,Rebekah I. Dawson,Ruobing Dong,René Doyon,Z. H. Draper,Gaspard Duchêne,Gaspard Duchêne,Thomas M. Esposito,Daniel C. Fabrycky,Michael P. Fitzgerald,Katherine B. Follette,J. J. Fortney,B. L. Gerard,S. Goodsell,A. Z. Greenbaum,P. Hibon,Sasha Hinkley,Tara Cotten,Li-Wei Hung,Patrick Ingraham,M. Johnson-Groh,Paul Kalas,David Lafrenière,James E. Larkin,J. Lee,Michael R. Line,Douglas Long,Jérôme Maire,Franck Marchis,Brenda C. Matthews,Brenda C. Matthews,Claire E. Max,Stanimir Metchev,Stanimir Metchev,Max Millar-Blanchaer,Tushar Mittal,Caroline V. Morley,Katie M. Morzinski,R. Murray-Clay,Rebecca Oppenheimer,Dave Palmer,Rahul Patel,Marshall D. Perrin,Lisa Poyneer,Roman R. Rafikov,Fredrik T. Rantakyrö,Emily L. Rice,Patricio Rojo,Alex Rudy,Jean-Baptiste Ruffio,Maria Teresa Ruiz,Naru Sadakuni,Leslie Saddlemyer,M. Salama,Dmitry Savransky,Adam C. Schneider,Anand Sivaramakrishnan,Inseok Song,Rémi Soummer,S. Thomas,Gautam Vasisht,James K. Wallace,Kimberly Ward-Duong,Sloane J. Wiktorowicz,Schuyler Wolff,Barry Zuckerman +94 more
TL;DR: Using the Gemini Planet Imager, a Jupiter-like planet is discovered orbiting the ~20-million-year-old star 51 Eridani at a projected separation of 13 astronomical units and has a methane signature and is probably the smallest exoplanet that has been directly imaged.
Journal ArticleDOI
A planetary system as the origin of structure in Fomalhaut's dust belt
TL;DR: The sharp inner edge and offset demonstrate the presence of planetary-mass objects orbiting Fomalhaut, demonstrating the structure of a dusty disk modified by the gravitational influence of planets.