WASP-14b: 7.3 MJ transiting planet in an eccentric orbit
Joshi, Y. C. ; Pollacco, D. ; Cameron, A. Collier ; Skillen, I. ; Simpson, E. ; Steele, I. ; Street, R. A. ; Stempels, H. C. ; Christian, D. J. ; Hebb, L. ; Bouchy, F. ; Gibson, N. P. ; Hébrard, G. ; Keenan, F. P. ; Loeillet, B. ; Meaburn, J. ; Moutou, C. ; Smalley, B. ; Todd, I. ; West, R. G. ; Anderson, D. R. ; Bentley, S. ; Enoch, B. ; Haswell, C. A. ; Hellier, C. ; Horne, K. ; Irwin, J. ; Lister, T. A. ; McDonald, I. ; Maxted, P. ; Mayor, M. ; Norton, A. J. ; Parley, N. ; Perrier, C. ; Pont, F. ; Queloz, D. ; Ryans, R. ; Smith, A. M. S. ; Udry, S. ; Wheatley, P. J. ; Wilson, D. M.
In: Monthly Notices of the Royal Astronomical Society, 2009, vol. 392, no. 4, p. 1532-1538
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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