The High Albedo of the Hot-Jupiter Kepler-7b

Details The High Albedo of the Hot-Jupiter Kepler-7b The High Albedo of the Hot-Jupiter Kepler-7b

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21710308d&link_type=abstract

American Astronomical Society, AAS Meeting #217, #103.08; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

Kepler-7b is the least dense extrasolar planet discovered to date. This 4.9-day period hot-Jupiter has a mass of half of Jupiter (0.47 MJ) but a radius 50% larger (1.48 RJ). We present a global analysis of this system including more than 180 high-precision transits and occultations obtained with NASA's Kepler mission. Our best fit to the observations yields a high geometric albedo, with a minor part due to the planetary thermal emission. Therefore most of the planet light observed by Kepler is scattered light, suggesting the presence of a highly reflective layer in its upper atmosphere. We discuss the nature of this layer, possibly made of silicate condensates forming high-altitude clouds decks.
Kepler was selected as the 10th mission of the Discovery Program. Funding for this mission is provided by NASA, Science Mission Directorate.

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