Journal Article

WASP-14b: 7.3 <i>M</i><sub>J</sub> transiting planet in an eccentric orbit

Y. C. Joshi, D. Pollacco, A. Collier Cameron, I. Skillen, E. Simpson, I. Steele, R. A. Street, H. C. Stempels, D. J. Christian, L. Hebb, F. Bouchy, N. P. Gibson, G. Hébrard, F. P. Keenan, B. Loeillet, J. Meaburn, C. Moutou, B. Smalley, I. Todd, R. G. West, D. R. Anderson, S. Bentley, B. Enoch, C. A. Haswell, C. Hellier, K. Horne, J. Irwin, T. A. Lister, I. McDonald, P. Maxted, M. Mayor, A. J. Norton, N. Parley, C. Perrier, F. Pont, D. Queloz, R. Ryans, A. M. S. Smith, S. Udry, P. J. Wheatley and D. M. Wilson

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 392, issue 4, pages 1532-1538
Published in print February 2009 | ISSN: 0035-8711
Published online January 2009 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.14178.x
WASP-14b: 7.3 MJ transiting planet in an eccentric orbit

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We report the discovery of a 7.3 MJ 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 MJ and a radius of 1.28 ± 0.08 RJ. 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.

Keywords: techniques: photometric; techniques: radial velocities; stars: individual: GSC 01482−00882

Journal Article.  4498 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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