WASP-14b: 7.3 M-J 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. Hebrard, F. P. Keenan, B. Loeillet, J. Meaburn, C. Moutou, B. Smalley, I. Todd, R. G. WestD. R. Anderson, C. A. 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. Wheatly, D. M. Wilson

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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.
Original languageEnglish
Pages (from-to)1532-1538
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume392
DOIs
Publication statusPublished - 01 Feb 2009

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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    Joshi, Y. C., Pollacco, D., Collier Cameron, A., Skillen, I., Simpson, E., Steele, I., Street, R. A., Stempels, H. C., Christian, D. J., Hebb, L., Bouchy, F., Gibson, N. P., Hebrard, G., Keenan, F. P., Loeillet, B., Meaburn, J., Moutou, C., Smalley, B., Todd, I., ... Wilson, D. M. (2009). WASP-14b: 7.3 M-J transiting planet in an eccentric orbit. Monthly Notices of the Royal Astronomical Society, 392, 1532-1538. https://doi.org/10.1111/j.1365-2966.2008.14178.x