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Published November 2011 | Published + Submitted
Journal Article Open

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

Abstract

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 mag 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 R_p = 1.136^(+0.073)_(– 0.054) R_J, yielding a mean density of ρ_p = 7.1 ± 1.1 g cm^(–3).

Additional Information

© 2011 The American Astronomical Society. Received 2011 June 24; accepted 2011 July 18; published 2011 September 28. The work of L.A.B. was supported by the Carlsberg Foundation. Funding for this Discovery Mission is provided by NASA's Science Mission Directorate. This paper uses observations obtained with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. This work is also based on observations made with the Spitzer Space Telescope which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was also provided by NASA through an award issued by JPL/Caltech. Facilities: Kepler - The Kepler Mission, NOT (FIES) - Nordic Optical Telescope, Keck:I (HIRES) - KECK I Telescope, Spitzer - Spitzer Space Telescope satellite, WIYN (Speckle) - Wisconsin-Indiana-Yale-NOAO Telescope, Hale - Palomar Observatory's 5.1m Hale Telescope, MMT - MMT at Fred Lawrence Whipple Observatory.

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Published - Buchhave_2011_ApJS_197_3.pdf

Submitted - 1106.5510.pdf

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August 19, 2023
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