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 journalArticle

41 Scopus citations

Abstract

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
Volume197
Issue number1
DOIs
StatePublished - Nov 1 2011

Keywords

  • planetary systems
  • stars: individual (Kepler-14b, KIC 10264660, 2MASS J19105011+4719589)
  • techniques: photometric
  • techniques: spectroscopic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Buchhave, L. A., Latham, D. W., Carter, J. A., Désert, J. M., Torres, G., Adams, E. R., Bryson, S. T., Charbonneau, D. B., Ciardi, D. R., Kulesa, C., Dupree, A. K., Fischer, D. A., Fressin, F., Gautier, T. N., Gilliland, R. L., Howell, S. B., Isaacson, H., Jenkins, J. M., Marcy, G. W., ... Van Cleve, J. (2011). Kepler-14b: A massive hot Jupiter transiting an F star in a close visual binary. Astrophysical Journal, Supplement Series, 197(1), [3]. https://doi.org/10.1088/0067-0049/197/1/3