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

Lars A. Buchhave, David W. Latham, Joshua A. Carter, Jean Michel Désert, Guillermo Torres, Elisabeth R. Adams, Stephen T. Bryson, David B. Charbonneau, David R. Ciardi, Craig Kulesa, Andrea K. Dupree, Debra A. Fischer, François Fressin, Thomas N. Gautier, Ronald L. Gilliland, Steve B. Howell, Howard Isaacson, Jon M. Jenkins, Geoffrey W. Marcy, Donald W. McCarthyJason F. Rowe, Natalie M. Batalha, William J. Borucki, Timothy M. Brown, Douglas A. Caldwell, Jessie L. Christiansen, William D. Cochran, Drake Deming, Edward W. Dunham, Mark Everett, Eric B. Ford, Jonathan J. Fortney, John C. Geary, Forrest R. Girouard, Michael R. Haas, Matthew J. Holman, Elliott Horch, Todd C. Klaus, Heather A. Knutson, David G. Koch, Jeffrey Kolodziejczak, Jack J. Lissauer, Pavel MacHalek, Fergal Mullally, Martin D. Still, Samuel N. Quinn, Sara Seager, Susan E. Thompson, Jeffrey Van Cleve

Research output: Contribution to journalArticlepeer-review

53 Scopus citations


We present the discovery of a hot Jupiter transiting an F star in a close visual (03 sky projected angular separation) binary system. The dilution of the host star's light by the nearly equalmagnitude stellar companion (∼0.5mag 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+0.35 -0.34 M J and a radius of Rp = 1.136+0.073-0.054 R J, yielding a mean density of ρp = 7.1 ± 1.1 g cm-3.

Original languageEnglish (US)
Article number3
JournalAstrophysical Journal, Supplement Series
Issue number1
StatePublished - Nov 2011

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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