Details

Autor(en) / Beteiligte

• Torres, G
• Bakos, G. Á
• Kovács, G
• Latham, D. W
• Fernández, J. M
• Noyes, R. W
• Esquerdo, G. A
• Sozzetti, A
• Fischer, D. A
• Butler, R. P
• Marcy, G. W
• Stefanik, R. P
• Sasselov, D. D
• Lázár, J
• Papp, I
• Sári, P

Titel

HAT-P-3b: A Heavy-Element-rich Planet Transiting a K Dwarf Star

Ist Teil von

• The Astrophysical journal, 2007-09, Vol.666 (2), p.L121-L124

Ort / Verlag

Chicago, IL: IOP Publishing

Erscheinungsjahr

2007

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• We report the discovery of a Jupiter-size planet transiting a relatively bright (V = 11.56) and metal-rich early K dwarf star with a period of similar to 2.9 days. On the basis of follow-up photometry and spectroscopy we determine the mass and radius of the planet, HAT-P-3b, to be M sub(p) = 0.599 plus or minus 0.026 M sub(Jap) and R sub(p) = 0.890 plus or minus 0.046 R sub(Jap). The relatively small size of the object for Its mass implies the presence of about 75 M [unk] worth of heavy elements ( similar to [unk]4 of the total mass) based on current theories of Irradiated extrasolar giant planets, similar to the mass of the core inferred for the transiting planet HD 149026b. The bulk density of HAT-P-3b is found to be rho p = 1.06 plus or minus 0-17 g cm sub(-3), and the planet orbits the star at a distance of 0.03894 AU. Ephemerides for the transit centers are T sub(c) = 2.454, 218.7594 plus or minus 0.0029 + N x (2.899703 plus or minus 0.000054) (HJD).