HAT-P-3b: A heavy-element rich planet transiting a K dwarf star

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dc.creatorTorres, G.
dc.creatorBakos, G. A.
dc.creatorKovacs, G.
dc.creatorLatham, D. W.
dc.creatorFernandez, J. M.
dc.creatorNoyes, R. W.
dc.creatorEsquerdo, G. A.
dc.creatorSozzetti, A.
dc.creatorFischer, D. A.
dc.creatorButler, R. P.
dc.creatorMarcy, G. W.
dc.creatorStefanik, R. P.
dc.creatorSasselov, D. D.
dc.creatorLazar, J.
dc.creatorPapp, I.
dc.creatorSari, P.
dc.date2007-07-28
dc.date.accessioned2026-07-07T11:41:39Z
dc.date.available2026-07-07T11:41:39Z
dc.descriptionWe 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 about 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_p = 0.599 +/- 0.026 M_Jup and R_p = 0.890 +/- 0.046 R_Jup. The relatively small size of the object for its mass implies the presence of about 75 Earth masses worth of heavy elements (1/3 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 +/- 0.17 g/cm^3, and the planet orbits the star at a distance of 0.03894 AU. Ephemerides for the transit centers are T_c = 2,454,218.7594 +/- 0.0029 + N (2.899703 +/- 0.000054) (HJD).
dc.descriptionTo appear in ApJL
dc.identifierhttps://arxiv.org/abs/0707.4268
dc.identifierhttp://arxiv.org/abs/0707.4268
dc.identifierAstrophys.J.666:L121-L124,2007
dc.identifierdoi:10.1086/521792
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200608
dc.subjectAstrophysics
dc.titleHAT-P-3b: A heavy-element rich planet transiting a K dwarf star
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