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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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Official URL: http://dx.doi.org/10.1111/j.1365-2966.2008.14178.x

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