Article (Scientific journals)
The Low Density Transiting Exoplanet WASP-15b
West, R. G.; Anderson, D. R.; Gillon, Michaël et al.
2009In Astronomical Journal, 137, p. 4834-4836
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Keywords :
binaries: eclipsing; planetary systems; stars: individual: WASP-15; techniques: photometric; techniques: radial velocities; techniques: spectroscopic
Abstract :
[en] We report the discovery of a low-density exoplanet transiting an 11th magnitude star in the Southern hemisphere. WASP-15b, which orbits its host star with a period P = 3.7520656 ± 0.0000028 d, has a mass M [SUB]p[/SUB] = 0.542 ± 0.050 M [SUB]J[/SUB] and radius R [SUB]p[/SUB] = 1.428 ± 0.077 R [SUB]J[/SUB], and is therefore one of the least dense transiting exoplanets so far discovered (rho[SUB]p[/SUB] = 0.247 ± 0.035 g cm[SUP]--3[/SUP]). An analysis of the spectrum of the host star shows it to be of spectral type around F5, with an effective temperature T [SUB]eff[/SUB] = 6300 ± 100 K and [Fe/H] = --0.17 ± 0.11.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
West, R. G.;  Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
Anderson, D. R.;  Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Gillon, Michaël  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Hebb, L.;  School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK
Hellier, C.;  Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Maxted, P. F. L.;  Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Queloz, D.;  Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Smalley, B.;  Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Triaud, A H M J;  Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Wilson, D. M.;  Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Bentley, S. J.;  Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Collier Cameron, A.;  School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK
Enoch, B.;  School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK
Horne, K.;  School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK
Irwin, J.;  Department of Astronomy, Harvard University, 60 Garden Street, MS 10, Cambridge, MA 02138, USA
Lister, T. A.;  Las Cumbres Observatory, 6740 Cortona Dr. Suite 102, Santa Barbara, CA 93117, USA
Mayor, M.;  Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Parley, N.;  School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK
Pepe, F.;  Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Pollacco, D.;  Astrophysics Research Centre, School of Mathematics & Physics, Queen's University, University Road, Belfast BT7 1NN, UK
Segransan, D.;  Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Spano, M.;  Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Udry, S.;  Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Wheatley, P. J.;  Department of Physics, University of Warwick, Coventry CV4 7AL, UK
More authors (14 more) Less
Language :
English
Title :
The Low Density Transiting Exoplanet WASP-15b
Publication date :
01 June 2009
Journal title :
Astronomical Journal
ISSN :
0004-6256
eISSN :
1538-3881
Publisher :
Univ Chicago Press, Chicago, United States - Illinois
Volume :
137
Pages :
4834-4836
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
http://de.arxiv.org/abs/0902.2651
Available on ORBi :
since 03 November 2009

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