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dc.contributor.authorAnderson, D.R.
dc.contributor.authorCollier Cameron, A.
dc.contributor.authorHellier, C.
dc.contributor.authorLendl, M.
dc.contributor.authorLister, T.A.
dc.contributor.authorMaxted, P.F.L.
dc.contributor.authorQueloz, D.
dc.contributor.authorSmalley, B.
dc.contributor.authorSmith, A.M.S.
dc.contributor.authorTriaud, A.H.M.J.
dc.contributor.authorBrown, D.J.A.
dc.contributor.authorGillon, M.
dc.contributor.authorNeveu-Vanmalle, M.
dc.contributor.authorPepe, F.
dc.contributor.authorPollacco, D.
dc.contributor.authorSégransan, D.
dc.contributor.authorUdry, S.
dc.contributor.authorWest, R.G.
dc.contributor.authorWheatley, P.J.
dc.identifier.citationAnderson , D R , Collier Cameron , A , Hellier , C , Lendl , M , Lister , T A , Maxted , P F L , Queloz , D , Smalley , B , Smith , A M S , Triaud , A H M J , Brown , D J A , Gillon , M , Neveu-Vanmalle , M , Pepe , F , Pollacco , D , Ségransan , D , Udry , S , West , R G & Wheatley , P J 2015 , ' WASP-20b and WASP-28b : a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars ' , Astronomy & Astrophysics , vol. 575 , A64 .
dc.identifier.otherPURE: 173591044
dc.identifier.otherPURE UUID: d46f6820-cb80-4822-a733-84c9fb5c47a9
dc.identifier.otherScopus: 84923375229
dc.identifier.otherWOS: 000350249100061
dc.identifier.otherORCID: /0000-0002-8863-7828/work/58531299
dc.descriptionFunding for WASP comes from consortium universities and from the UK’s Science and Technology Facilities Council. M. Gillon is a FNRS Research Associate. A. H. M. J. Triaud is a Swiss National Science Foundation fellow under grant number PBGEP2-145594.en
dc.description.abstractWe report the discovery of the planets WASP-20b and WASP-28b along with measurements of their sky-projected orbital obliquities. WASP-20b is an inflated, Saturn-mass planet (0.31M; 1.46R) in a 4.9-day, near-aligned (λ = 12.7 ± 4.2) orbit around CD-24 102 (V = 10.7; F9). Due to the low density of the planet and the apparent brightness of the host star, WASP-20 is a good target for atmospheric characterisation via transmission spectroscopy. WASP-28b is an inflated, Jupiter-mass planet (0.91M; 1.21R) in a 3.4-day, near-aligned (λ = 8 ± 18) orbit around a V = 12, F8 star. As intermediate-mass planets in short orbits around aged, cool stars (7 Gyr and 6000 ± 100 K for WASP-20; 5 Gyr and 6100 ± 150 K for WASP-28), their orbital alignment is consistent with the hypothesis that close-in giant planets are scattered into eccentric orbits with random alignments, which are then circularised and aligned with their stars' spins via tidal dissipation.
dc.relation.ispartofAstronomy & Astrophysicsen
dc.rightsReproduced with permission from Astronomy & Astrophysics, © ESO 2015.en
dc.subjectPlanetary systemsen
dc.subjectStars: individual: WASP-20ben
dc.subjectStars: individual: WASP-28ben
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleWASP-20b and WASP-28b : a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type starsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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