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WASP-14b: 7.3 MJ transiting planet in an eccentric orbit
Authors: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  D M Wilson
Institution:Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, University Road, Belfast BT7 1NN;School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS;Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700 Santa Cruz de la Palma, Tenerife, Spain;Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD;Las Cumbres Observatory, 6740 Cortona Dr. Suite 102, Santa Barbara, CA 93117, USA;Institut d'Astrophysique de Paris, UMR 7095 CNRS, UniversitéPierre and Marie Curie, 98bis; bvd. Arago, 75014 Paris, France Laboratoire d'Astrophysique de Marseille, CNRS (UMR 6110), BP8, 13376 Marseille Cedex 12, France;Department of Physics and Astronomy, University of Manchester, Manchester, Macclesfield, Cheshire, SK11 9DL;Astrophysics Group, Keele University, Staffordshire ST5 5BG;Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH;Department of Physics and Astronomy, The Open University, Milton Keynes, MK7 6AA;Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS-16, Cambridge, MA 02138-1516, USA;Observatoire de Genève, Universitéde Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland;Laboratoire d'AstrOphysique, Observatoire de Grenoble, Univ. J. Fourier - BP 53, F-38041 Grenoble Cedex 9, France;Physikalisches Institu, University of Bern, Sidlerstrass 5, 3012 Bern, Switzerland;Department of Physics, University of Warwick, Coventry CV4 7AL
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.
Keywords:techniques: photometric  techniques: radial velocities  stars: individual: GSC 01482?00882
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