ORBi: Queloz D. - WASP-8b: a retrograde transiting planet in a multiple system

Reference : WASP-8b: a retrograde transiting planet in a multiple system


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/76668

Title :	WASP-8b: a retrograde transiting planet in a multiple system
Language :	English
Author, co-author :	Queloz, D. [Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290 Sauverny, Switzerland]
	Anderson, D. [Astrophysics Group, Keele University, Staffordshire, ST55BG, UK]
	Collier Cameron, A. [School of Physics & Astronomy, University of St Andrews, North Haugh, KY16 9SS, St Andrews, Fife, Scotland, UK]
	Gillon, Michaël [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
	Hebb, L. [School of Physics & Astronomy, University of St Andrews, North Haugh, KY16 9SS, St Andrews, Fife, Scotland, UK]
	Hellier, C. [Astrophysics Group, Keele University, Staffordshire, ST55BG, UK]
	Maxted, P. [Astrophysics Group, Keele University, Staffordshire, ST55BG, UK]
	Pepe, F. [Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290 Sauverny, Switzerland]
	Pollacco, D. [Astrophysics Research Centre, School of Mathematics & Physics, Queens University, University Road, Belfast, BT71NN, UK]
	Ségransan, D. [Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290 Sauverny, Switzerland]
	Smalley, B. [Astrophysics Group, Keele University, Staffordshire, ST55BG, UK]
	Triaud, A H M J [Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290 Sauverny, Switzerland]
	Udry, S. [Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290 Sauverny, Switzerland]
	West, R. [Department of Physics and Astronomy, University of Leicester, Leicester, LE17RH, UK]
Publication date :	1-Jul-2010
Journal title :	Astronomy and Astrophysics
Publisher :	EDP Sciences
Volume :	517
Pages :	L1
Audience :	International
ISSN :	0004-6361
e-ISSN :	1432-0746
City :	Les Ulis
Country :	France
Keywords :	[en] stars: individual: WASP-8 ; techniques: photometric ; techniques: spectroscopic ; planet-star interactions ; planetary systems ; techniques: radial velocities
Abstract :	[en] We report the discovery of WASP-8b, a transiting planet of 2.25 ± 0.08 M[SUB]Jup[/SUB] on a strongly inclined eccentric 8.15-day orbit, moving in a retrograde direction to the rotation of its late-G host star. Evidence is found that the star is in a multiple stellar system with two other companions. The dynamical complexity of the system indicates that it may have experienced secular interactions such as the Kozai mechanism or a formation that differs from the “classical” disc-migration theory. Based on observations made with HARPS spectrograph on the 3.6-m ESO telescope and the EULER Swiss telescope at La Silla Observatory, Chile.Radial velocity data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via <A href="http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/517/L1">http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/517/L1</A>
Permalink :	http://hdl.handle.net/2268/76668
DOI :	10.1051/0004-6361/201014768
Other URL :	http://adsabs.harvard.edu/abs/2010A%26A...517L...1Q
Commentary :	http://de.arxiv.org/abs/1006.5089

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