*Description*: This artist's illustration shows the layer-cake structure of the atmopshere of extrasolar planet HD 209458b. Hubble discovered a dense upper layer of hot hydrogen gas where the super-hot planet's atmosphere is bleeding off into space. Technical facts about this news release: About the Object Object Name: HD 209458b Object Description: Extrasolar Planet Position (J2000): R.A. 22h 03m 10s.80 Dec. +18° 53' 4".0 Constellation: Pegasus Distance: Approximately 150 light-years (46 parsecs) About the Data Data Description: The Hubble image was created from HST data from proposal 10145: A. Vidal-Madjar, A. Lecavelier des Etangs, and J.-M. Desert (CNRS, Institute d'Astrophysique de Paris), G. Ballester (University of Arizona), J. Walsh (Space Telescope - European Coordinating Facility), D. Ehrenreich, G. Hebrard, and R. Ferlet (CNRS, Institute d'Astrophysique de Paris), J. Mcconnell (York University), M. Mayor (Observatoire de Geneve), C. Parkinson (California Institute of Technology); and proposal 9447: D. Charbonneau (Harvard University), J.-L. Bertaux (Service d'Aeronomie du Centre National de la Recherche Scientifique), T. Brown (University Corporation for Atmospheric Research), R. Gilliland (STScI), and R. Noyes (Harvard-Smithsonian Center for Astrophysics). The science team comprises G. Ballester (University of Arizona), D. Sing (University of Arizona/Institute d'Astrophysique de Paris), and F. Herbert (Institute d'Astrophysique de Paris). Instrument: STIS ACS/HRC; ACS/SBC Filters/Gratings: G430L, G750L PR110L, PR200L, F115LP, F220W, F344N, F250W, F330W Exposure Dates: May - July, 2003 May - July, 2005 About this Release Image Credit: NASA, ESA, and G. Ballester (University of Arizona) Release Date: February 1, 2007 *News Release Number:*: STScI-2007-07c

plus-circle Add Review

comment

Reviews