Reference : WASP-19b: The Shortest Period Transiting Exoplanet Yet Discovered
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/3870
WASP-19b: The Shortest Period Transiting Exoplanet Yet Discovered
English
Hebb, L. [School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9SS, UK]
Collier-Cameron, A. [School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9SS, UK]
Triaud, A H M J [Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland]
Lister, T. A. [Las Cumbres Observatory, 6740 Cortona Dr. Suite 102, Santa Barbara, CA 93117, USA]
Smalley, B. [Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK]
Maxted, P. F. L. [Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK]
Hellier, C. [Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK]
Anderson, D. R. [Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK]
Pollacco, D. [Astrophysics Research Centre, School of Mathematics & Physics, Queen's University, University Road, Belfast, BT7 1NN, UK]
Gillon, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Queloz, D. [Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland]
West, R. G. [Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK]
Bentley, S. [Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK]
Enoch, B. [School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9SS, UK]
Haswell, C. A. [Department of Physics and Astronomy, The Open University, Milton Keynes, MK7 6AA, UK]
Horne, K. [School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9SS, UK]
Mayor, M. [Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland]
Pepe, F. [Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland]
Segransan, D. [Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland]
Skillen, I. [Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700 Santa Cruz de la Palma, Tenerife, Spain]
Udry, S. [Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland]
Wheatley, P. J. [Department of Physics, University of Warwick, Coventry CV4 7AL, UK]
1-Jan-2010
Astrophysical Journal
University of Chicago Press
708
224-231
Yes (verified by ORBi)
International
0004-637X
Chicago
IL
[en] planetary systems ; techniques: photometric ; techniques: radial velocities
[en] We report on the discovery of a new extremely short period transiting extrasolar planet, WASP-19b. The planet has mass M [SUB]pl[/SUB] = 1.15 ± 0.08 M[SUB]J[/SUB] , radius R [SUB]pl[/SUB] = 1.31 ± 0.06 R[SUB]J[/SUB] , and orbital period P = 0.7888399 ± 0.0000008 days. Through spectroscopic analysis, we determine the host star to be a slightly super-solar metallicity ([M/H] = 0.1 ± 0.1 dex) G-dwarf with T [SUB]eff[/SUB] = 5500 ± 100 K. In addition, we detect periodic, sinusoidal flux variations in the light curve which are used to derive a rotation period for the star of P [SUB]rot[/SUB] = 10.5 ± 0.2 days. The relatively short stellar rotation period suggests that either WASP-19 is somewhat young (~ 600 Myr old) or tidal interactions between the two bodies have caused the planet to spiral inward over its lifetime resulting in the spin-up of the star. Due to the detection of the rotation period, this system has the potential to place strong constraints on the stellar tidal quality factor, Q'[SUB] s [/SUB], if a more precise age is determined.
http://hdl.handle.net/2268/3870
10.1088/0004-637X/708/1/224
http://adsabs.harvard.edu/abs/2010ApJ...708..224H
http://de.arxiv.org/abs/1001.0403

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