WASP-10b: a 3MJ, gas-giant planet transiting a late-type K star |
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| Authors: | D. J. Christian,N. P. Gibson,E. K. Simpson,R. A. Street,I. Skillen,D. Pollacco,A. Collier Cameron,Y. C. Joshi,F. P. Keenan,H. C. Stempels,C. A. Haswell,K. Horne,D. R. Anderson,S. Bentley,F. Bouchy,W. I. Clarkson,B. Enoch,L. Hebb,G. Hé brard,C. Hellier,J. Irwin,S. R. Kane,T. A. Lister,B. Loeillet,P. Maxted,M. Mayor,I. McDonald,C. Moutou,A. J. Norton,N. Parley,F. Pont,D. Queloz,R. Ryans,B. Smalley,A. M. S. Smith,I. Todd,S. Udry,R. G. West,P. J. Wheatley, D. M. Wilson |
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| Affiliation: | Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, University Road, Belfast, BT7 1NN;Department of Physics and Astronomy, California State University Northridge, 18111 Nordhoff Street, Northridge, CA 91330-8268, USA;Las Cumbres Observatory, 6740 Cortona Dr Suite 102, Santa Barbara, CA 93117, USA;Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700 Santa Cruz de la Palma, Tenerife, Spain;School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS;Department of Physics and Astronomy, The Open University, Milton Keynes, MK7 6AA;Astrophysics Group, Keele University, Staffordshire, ST5 5BG;Institut d'Astrophysique de Paris, CNRS (UMR 7095) –UniversitéPierre and Marie Curie, 98bis; bvd. Arago, 75014 Paris, France Observatoire de Haute-Provence, 04870 St Michel l'Observatoire, France;STScI, 3700 San Martin Drive, Baltimore, MD 21218, USA;Harvard–Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA;Michelson Science Center, Caltech, MS 100-22, 770 South Wilson Avenue Pasadena, CA 91125, USA;Laboratoire d'Astrophysique de Marseille, BP 8, 13376 Marseille Cedex 12, France;Observatoire de Genève, Universitéde Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland;School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL;Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH;Department of Physics, University of Warwick, Coventry, CV4 7AL |
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| Abstract: | We report the discovery of WASP-10b, a new transiting extrasolar planet (ESP) discovered by the Wide Angle Search for Planets (WASP) Consortium and confirmed using Nordic Optical Telescope FIbre-fed Echelle Spectrograph and SOPHIE radial velocity data. A 3.09-d period, 29 mmag transit depth and 2.36 h duration are derived for WASP-10b using WASP and high-precision photometric observations. Simultaneous fitting to the photometric and radial velocity data using a Markov Chain Monte Carlo procedure leads to a planet radius of 1.28 R J , a mass of 2.96 M J and eccentricity of ≈0.06. WASP-10b is one of the more massive transiting ESPs, and we compare its characteristics to the current sample of transiting ESP, where there is currently little information for masses greater than ≈ 2 M J and non-zero eccentricities. WASP-10's host star, GSC 2752−00114 (USNO-B1.0 1214−0586164) is among the fainter stars in the WASP sample, with V = 12.7 and a spectral type of K5. This result shows promise for future late-type dwarf star surveys. |
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| Keywords: | methods: data analysis techniques: photometric techniques: radial velocities stars: planetary systems |
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