WASP-14b: 7.3 Mj transiting planet in an eccentric orbit
Abstract
We report the discovery of a 7.3 Mjup exoplanet WASP-14b, one of the most massive transiting exoplanets observed to date. The planet orbits the tenth-magnitude F5V star USNO-B1 11118-0262485 with a period of 2.243752 days 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 Mjup and a radius of 1.28+/-0.08 Rjup. This leads to a mean density of about 4.6 g/cm^3 making it densest transiting exoplanets yet found at an orbital period less than 3 days. 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 vsin i = 4.9+/-1.0 km/s, 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.
Cite
@article{arxiv.0806.1478,
title = {WASP-14b: 7.3 Mj transiting planet in an eccentric orbit},
author = {Y. C. Joshi and D. Pollacco and A. Collier Cameron and I. Skillen and E. Simpson and I. Steele and R. A. Street and H. C. Stempels and D. J. Christian and L. Hebb and F. Bouchy and N. P. Gibson and G. Hebrard and F. P. Keenan and B. Loeillet and J. Meaburn and C. Moutou and B. Smalley and I. Todd and R. G. West and D. Anderson and S. Bentley and B. Enoch and C. A. Haswell and C. Hellier and K. Horne and J. Irwin and T. A. Lister and I. McDonald and P. Maxted and M. Mayor and A. J. Norton and N. Parley and C. Perrier and F. Pont and D. Queloz and R. Ryans and A. M. S. Smith and S. Udry and P. J. Wheatley and D. M. Wilson},
journal= {arXiv preprint arXiv:0806.1478},
year = {2009}
}
Comments
7 pages, 5 figures, 3 tables, accepted for publication in MNRAS