Abstract
We report on the discovery and confirmation of Kepler-7b, a transiting planet with unusually low density. The mass is less than half that of Jupiter, M P = 0.43 M J, but the radius is 50% larger, R P = 1.48 R J. The resulting density, ¿P = 0.17 g cm–3, is the second lowest reported so far for an extrasolar planet. The orbital period is fairly long, P = 4.886 days, and the host star is not much hotter than the Sun, T eff = 6000 K. However, it is more massive and considerably larger than the Sun, M = 1.35 M and R = 1.84 R , and must be near the end of its life on the main sequence
Originalsprog | Engelsk |
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Tidsskrift | The Astrophysical Journal Letters |
Vol/bind | 713 |
Udgave nummer | 2 |
Sider (fra-til) | L140-L144 |
Antal sider | 4 |
ISSN | 0004-637X |
DOI | |
Status | Udgivet - 20 apr. 2010 |