Kepler-14b: A massive hot Jupiter transiting an F star in a close visual binary

We present the discovery of a hot Jupiter transiting an F star in a close visual (0.3" sky projected angular separation) binary system. The dilution of the host star's light by the nearly equal magnitude stellar companion (~ 0.5 magnitudes fainter) significantly affects the derived planeta...

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Bibliographic Details
Main Authors:	Buchhave, Lars A, Latham, David W, Carter, Joshua A, Désert, Jean-Michel, Torres, Guillermo, Adams, Elisabeth R, Bryson, Stephen T, Charbonneau, David B, Ciardi, David R, Kulesa, Craig, Dupree, Andrea K, Fischer, Debra A, Fressin, François, GautierIII, Thomas N, Gilliland, Ronald L, Howel, Steve B, Isaacson, Howard, Jenkins, Jon M, Marcy, Geoffrey W, McCarthy, Donald W, Rowe, Jason F, Batalha, Natalie M, Borucki, William J, Brown, Timothy M, Caldwell, Douglas A, Christiansen, Jessie L, Cochran, William D, Deming, Drake, Dunham, Edward W, Everett, Mark, Ford, Eric B, Fortney, Jonathan J, Geary, John C, Girouard, Forrest R, Haas, Michael R, Holman, Matthew J, Horch, Elliott, Klaus, Todd C, Knutson, Heather A, Koch, David G, Kolodziejczak, Jeffrey, Lissauer, Jack J, Machalek, Pavel, Mullally, Fergal, Still, Martin D, Quinn, Samuel N, Seager, Sara, Thompson, Susan E, Van Cleve, Jeffrey
Format:	Journal Article
Language:	English
Published:	27-06-2011
Subjects:	Physics - Earth and Planetary Astrophysics
Online Access:	Get full text
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Summary:	We present the discovery of a hot Jupiter transiting an F star in a close visual (0.3" sky projected angular separation) binary system. The dilution of the host star's light by the nearly equal magnitude stellar companion (~ 0.5 magnitudes fainter) significantly affects the derived planetary parameters, and if left uncorrected, leads to an underestimate of the radius and mass of the planet by 10% and 60%, respectively. Other published exoplanets, which have not been observed with high-resolution imaging, could similarly have unresolved stellar companions and thus have incorrectly derived planetary parameters. Kepler-14b (KOI-98) has a period of P = 6.790 days and correcting for the dilution, has a mass of Mp = 8.40 +0.19-0.18 MJ and a radius of Rp = 1.136 +0.073-0.054 RJ, yielding a mean density of rho = 7.1 +- 1.1 g cm-3.
DOI:	10.48550/arxiv.1106.5510