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dc.contributor.authorTregloan-Reed, Jeremy
dc.contributor.authorSouthworth, John
dc.contributor.authorBurgdorf, M.
dc.contributor.authorNovati, S. Calchi
dc.contributor.authorDominik, Martin
dc.contributor.authorFinet, F.
dc.contributor.authorJørgensen, U. G.
dc.contributor.authorMaier, G.
dc.contributor.authorMancini, L.
dc.contributor.authorProf, S.
dc.contributor.authorRicci, D.
dc.contributor.authorSnodgrass, C.
dc.contributor.authorBozza, V.
dc.contributor.authorBrowne, Paul
dc.contributor.authorDodds, Peter
dc.contributor.authorGerner, T.
dc.contributor.authorHarpsøe, K.
dc.contributor.authorHinse, T. C.
dc.contributor.authorHundertmark, Markus Peter Gerhard
dc.contributor.authorKains, Noé
dc.contributor.authorKerins, E.
dc.contributor.authorLiebig, Christine Elisabeth
dc.contributor.authorPenny, M. T.
dc.contributor.authorRahvar, S.
dc.contributor.authorSahu, K.
dc.contributor.authorScarpetta, G.
dc.contributor.authorSchäfer, S.
dc.contributor.authorSchönebeck, F.
dc.contributor.authorSkottfelt, J.
dc.contributor.authorSurdej, J.
dc.identifier.citationTregloan-Reed , J , Southworth , J , Burgdorf , M , Novati , S C , Dominik , M , Finet , F , Jørgensen , U G , Maier , G , Mancini , L , Prof , S , Ricci , D , Snodgrass , C , Bozza , V , Browne , P , Dodds , P , Gerner , T , Harpsøe , K , Hinse , T C , Hundertmark , M P G , Kains , N , Kerins , E , Liebig , C E , Penny , M T , Rahvar , S , Sahu , K , Scarpetta , G , Schäfer , S , Schönebeck , F , Skottfelt , J & Surdej , J 2015 , ' Transits and starspots in the WASP-6 planetary system ' , Monthly Notices of the Royal Astronomical Society , vol. 450 , no. 2 , pp. 1760-1769 .
dc.identifier.otherPURE: 192925195
dc.identifier.otherPURE UUID: 0cf785bb-d6ee-4513-90f8-6ae63d2f5d65
dc.identifier.otherBibCode: 2015MNRAS.450.1760T
dc.identifier.otherScopus: 84937491151
dc.identifier.otherWOS: 000356338500048
dc.descriptionJTR acknowledges financial support from STFC in the form of a PhD Studentship (the majority of this work) and also acknowledges financial support from ORAU (Oak Ridge Associated Universities) and NASA in the form of a Post-Doctoral Programme (NPP) Fellowship. JS acknowledges financial support from STFC in the form of an Advanced Fellowship. DR acknowledges financial support from the Spanish Ministry of Economy and Competitiveness (MINECO) under the 2011 Severo Ochoa Programme MINECO SEV-2011-0187. FF, DR (boursier FRIA) and J Surdej acknowledge support from the Communauté française de Belgique – Actions de recherche concertées – Académie Wallonie–Europe.en
dc.description.abstractWe present updates to prism, a photometric transit-starspot model, and GEMC, a hybrid optimization code combining MCMC and a genetic algorithm. We then present high-precision photometry of four transits in the WASP-6 planetary system, two of which contain a starspot anomaly. All four transits were modelled using PRISM and GEMC, and the physical properties of the system calculated. We find the mass and radius of the host star to be 0.836 ± 0.063 M⊙ and 0.864 ± 0.024 R⊙, respectively. For the planet, we find a mass of 0.485 ± 0.027 MJup, a radius of 1.230 ± 0.035 RJup and a density of 0.244 ± 0.014 ρJup. These values are consistent with those found in the literature. In the likely hypothesis that the two spot anomalies are caused by the same starspot or starspot complex, we measure the stars rotation period and velocity to be 23.80 ± 0.15 d and 1.78 ± 0.20 km s−1, respectively, at a colatitude of 75.8°. We find that the sky-projected angle between the stellar spin axis and the planetary orbital axis is λ = 7.2° ± 3.7°, indicating axial alignment. Our results are consistent with and more precise than published spectroscopic measurements of the Rossiter–McLaughlin effect. These results suggest that WASP-6 b formed at a much greater distance from its host star and suffered orbital decay through tidal interactions with the protoplanetary disc.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rightsThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.en
dc.subjectTechniques: photometricen
dc.subjectStars: fundamental parametersen
dc.subjectStars: individual: WASP-6en
dc.subjectPlanetary systemsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleTransits and starspots in the WASP-6 planetary systemen
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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