%0 Journal Article
%T The First H-band Spectrum of the Massive Gas Giant Planet beta Pictoris b with the Gemini Planet Imager
%A Jeffrey Chilcote
%A Travis Barman
%A Michael P. Fitzgerald
%A James R. Graham
%A James E. Larkin
%A Bruce Macintosh
%A Brian Bauman
%A Adam S. Burrows
%A Andrew Cardwell
%A Robert J. De Rosa
%A Daren Dillon
%A Rene Doyon
%A Jennifer Dunn
%A Darren Erikson
%A Donald Gavel
%A Stephen J. Goodsell
%A Markus Hartung
%A Pascale Hibon
%A Patrick Ingraham
%A Paul Kalas
%A Quinn Konopacky
%A J¨¦r£¿me Maire
%A Franck Marchis
%A Mark S. Marley
%A Christian Marois
%A Max Millar-Blanchaer
%A Katie Morzinski
%A Andrew Norton
%A B. R. Oppenheimer
%A David Palmer
%A Jennifer Patience
%A Marshall D. Perrin
%A Lisa Poyneer
%A Laurent Pueyo
%A Fredrik Rantakyr£¿
%A Naru Sadakuni
%A Leslie Saddlemyer
%A Dmitry Savransky
%A Andrew Serio
%A Anand Sivaramakrishnan
%A Inseok Song
%A Remi Soummer
%A Sandrine Thomas
%A J. Kent Wallace
%A Sloane J. Wiktorowicz
%A Schuyler Wolff
%J Physics
%D 2014
%I arXiv
%R 10.1088/2041-8205/798/1/L3
%X Using the recently installed Gemini Planet Imager (GPI), we have taken the first H-band spectrum of the planetary companion to the nearby young star beta Pictoris. GPI is designed to image and provide low-resolution spectra of Jupiter sized, self-luminous planetary companions around young nearby stars. These observations were taken covering the H-band (1.65 microns). The spectrum has a resolving power of $\sim$ 45 and demonstrates the distinctive triangular shape of a cool substellar object with low surface gravity. Using atmospheric models, we find an effective temperature of $1650 \pm 50$ K and a surface gravity of $\log(g) = 4.0 \pm 0.25$ (cgs units). These values agree well with predictions from planetary evolution models for a gas giant with mass between 10 and 12 $M_{\rm Jup}$ and age between 10 and 20 Myrs.
%U http://arxiv.org/abs/1407.4469v1