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WASP-14b: 7.3 M-J transiting planet in an eccentric orbit

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Joshi, Y. C., Pollacco, Don, Cameron, A. Collier, Skillen, I., Simpson, E., Steele, I., Street, R. A., Stempels, H. C., Christian, D. J., Hebb, L. et al.
. (2009) WASP-14b: 7.3 M-J transiting planet in an eccentric orbit. Monthly Notices of the Royal Astronomical Society, Vol.392 (No.4). pp. 1532-1538. ISSN 0035-8711

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Abstract

We report the discovery of a 7.3 M-J exoplanet WASP-14b, one of the most massive transiting exoplanets observed to date. The planet orbits the 10th-magnitude F5V star USNO-B1 11118-0262485 with a period of 2.243 752 d and orbital eccentricity e = 0.09. A simultaneous fit of the transit light curve and radial velocity measurements yields a planetary mass of 7.3 +/- 0.5 M-J and a radius of 1.28 +/- 0.08 R-J. This leads to a mean density of about 4.6 g cm(-3) making it the densest transiting exoplanets yet found at an orbital period less than 3 d. We estimate this system to be at a distance of 160 +/- 20 pc. Spectral analysis of the host star reveals a temperature of 6475 +/- 100 K, log g = 4.07 cm s(-2) and v sin i = 4.9 +/- 1.0 km s(-1), and also a high lithium abundance, log N(Li) = 2.84 +/- 0.05. The stellar density, effective temperature and rotation rate suggest an age for the system of about 0.5-1.0 Gyr.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Physics
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Wiley
ISSN: 0035-8711
Official Date: 1 February 2009
Volume: Vol.392
Number: No.4
Number of Pages: 7
Page Range: pp. 1532-1538
Identification Number: 10.1111/j.1365-2966.2008.14178.x
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Queen's University Belfast, Open University, Isaac Newton Group La Palma and Instituto de Astrof 'isica de Canarias. SuperWASP Cameras, Consortium Universities, UK's Science and Technology Facilities Council, SOPHIE, Optical Infrared Coordination Network
URI: http://wrap.warwick.ac.uk/id/eprint/28673

Data sourced from Thomson Reuters' Web of Knowledge

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