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dc.contributor.authorSmith, A.M.S.
dc.contributor.authorAnderson, D.R.
dc.contributor.authorBouchy, F.
dc.contributor.authorCollier Cameron, A.
dc.contributor.authorDoyle, A.P.
dc.contributor.authorFumel, A.
dc.contributor.authorGillon, M.
dc.contributor.authorHébrard, G.
dc.contributor.authorHellier, C.
dc.contributor.authorJehin, E.
dc.contributor.authorLendl, M.
dc.contributor.authorMaxted, P.F.L.
dc.contributor.authorMoutou, C.
dc.contributor.authorPepe, F.
dc.contributor.authorPollacco, D.
dc.contributor.authorQueloz, D.
dc.contributor.authorSanterne, A.
dc.contributor.authorSegransan, D.
dc.contributor.authorSmalley, B.
dc.contributor.authorSouthworth, J.
dc.contributor.authorTriaud, A.H.M.J.
dc.contributor.authorUdry, S.
dc.contributor.authorWest, R.G.
dc.date.accessioned2014-09-23T12:01:06Z
dc.date.available2014-09-23T12:01:06Z
dc.date.issued2013-04
dc.identifier.citationSmith , A M S , Anderson , D R , Bouchy , F , Collier Cameron , A , Doyle , A P , Fumel , A , Gillon , M , Hébrard , G , Hellier , C , Jehin , E , Lendl , M , Maxted , P F L , Moutou , C , Pepe , F , Pollacco , D , Queloz , D , Santerne , A , Segransan , D , Smalley , B , Southworth , J , Triaud , A H M J , Udry , S & West , R G 2013 , ' WASP-71b : a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 star ' , Astronomy & Astrophysics , vol. 552 , A120 . https://doi.org/10.1051/0004-6361/201220727en
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 150577758
dc.identifier.otherPURE UUID: 88b1ddfd-d159-4d68-b8ff-e6b4c67da2a3
dc.identifier.otherScopus: 84876252481
dc.identifier.otherORCID: /0000-0002-8863-7828/work/58531372
dc.identifier.urihttps://hdl.handle.net/10023/5477
dc.description.abstractWe report the discovery by the WASP transit survey of a highly-irradiated, massive (2.242 ± 0.080 MJup) planet which transits a bright (V = 10.6), evolved F8 star every 2.9 days. The planet, WASP-71b, is larger than Jupiter (1.46 ± 0.13 RJup), but less dense (0.71 ± 0.16 ρJup). We also report spectroscopic observations made during transit with the CORALIE spectrograph, which allow us to make a highly-significant detection of the Rossiter-McLaughlin effect. We determine the sky-projected angle between the stellar-spin and planetary-orbit axes to be λ = 20.1 ± 9.7 degrees, i.e. the system is “aligned”, according to the widely-used alignment criteria that systems are regarded as misaligned only when λ is measured to be greater than 10 degrees with 3-σ confidence. WASP-71, with an effective temperature of 6059 ± 98 K, therefore fits the previously observed pattern that only stars hotter than 6250 K are host to planets in misaligned orbits. We emphasise, however, that λ is merely the sky-projected obliquity angle; we are unable to determine whether the stellar-spin and planetary-orbit axes are misaligned along the line-of-sight. With a mass of 1.56 ± 0.07 M⊙, WASP-71 was previously hotter than 6250 K, and therefore might have been significantly misaligned in the past. If so, the planetary orbit has been realigned, presumably through tidal interactions with the cooling star’s growing convective zone.
dc.format.extent6
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysicsen
dc.rights© ESO, 2013. Reproduced with permission from Astronomy & Astrophysics, © ESO.en
dc.subjectPlanetary systemsen
dc.subjectPlanets and satellites: detectionen
dc.subjectPlanets and satellites: fundamental parametersen
dc.subjectStars: individual: WASP-71en
dc.subjectPlanets and satellites: individual: WASP-71ben
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleWASP-71b : a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 staren
dc.typeJournal articleen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1051/0004-6361/201220727
dc.description.statusPeer revieweden
dc.identifier.grantnumberST/J001651/1en
dc.identifier.grantnumberPP/F000065/1en


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