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dc.contributor.authorMancini, L.
dc.contributor.authorSouthworth, J.
dc.contributor.authorCiceri, S.
dc.contributor.authorCalchi Novati, S.
dc.contributor.authorDominik, M.
dc.contributor.authorHenning, Th.
dc.contributor.authorJørgensen, U. G.
dc.contributor.authorKorhonen, H.
dc.contributor.authorNikolov, N.
dc.contributor.authorAlsubai, K. A.
dc.contributor.authorBozza, V.
dc.contributor.authorBramich, D. M.
dc.contributor.authorD'Ago, G.
dc.contributor.authorFiguera Jaimes, R.
dc.contributor.authorGalianni, P.
dc.contributor.authorGu, S.-H.
dc.contributor.authorHarpsøe, K.
dc.contributor.authorHinse, T. C.
dc.contributor.authorHundertmark, M.
dc.contributor.authorJuncher, D.
dc.contributor.authorKains, N.
dc.contributor.authorPopovas, A.
dc.contributor.authorRabus, M.
dc.contributor.authorRahvar, S.
dc.contributor.authorSkottfelt, J.
dc.contributor.authorSnodgrass, C.
dc.contributor.authorStreet, R.
dc.contributor.authorSurdej, J.
dc.contributor.authorTsapras, Y.
dc.contributor.authorVilela, C.
dc.contributor.authorWang, X.-B.
dc.contributor.authorWertz, O.
dc.identifier.citationMancini , L , Southworth , J , Ciceri , S , Calchi Novati , S , Dominik , M , Henning , T , Jørgensen , U G , Korhonen , H , Nikolov , N , Alsubai , K A , Bozza , V , Bramich , D M , D'Ago , G , Figuera Jaimes , R , Galianni , P , Gu , S-H , Harpsøe , K , Hinse , T C , Hundertmark , M , Juncher , D , Kains , N , Popovas , A , Rabus , M , Rahvar , S , Skottfelt , J , Snodgrass , C , Street , R , Surdej , J , Tsapras , Y , Vilela , C , Wang , X-B & Wertz , O 2014 , ' Physical properties of the WASP-67 planetary system from multi-colour photometry ' , Astronomy & Astrophysics , vol. 568 , A127 .
dc.identifier.otherPURE: 149341522
dc.identifier.otherPURE UUID: a2381515-8bb1-461b-bb6e-79ee8ae257af
dc.identifier.otherBibCode: 2014A&A...568A.127M
dc.identifier.otherScopus: 84906961735
dc.identifier.otherWOS: 000341185900111
dc.identifier.otherORCID: /0000-0002-3202-0343/work/75996669
dc.description.abstractContext. The extrasolar planet WASP-67 b is the first hot Jupiter definitively known to undergo only partial eclipses. The lack of the second and third contact points in this planetary system makes it difficult to obtain accurate measurements of its physical parameters. Aims. By using new high-precision photometric data, we confirm that WASP-67 b shows grazing eclipses and compute accurate estimates of the physical properties of the planet and its parent star. Methods. We present high-quality, multi-colour, broad-band photometric observations comprising five light curves covering two transit events, obtained using two medium-class telescopes and the telescope-defocusing technique. One transit was observed through a Bessel-R filter and the other simultaneously through filters similar to Sloan g′r′i′z′. We modelled these data using jktebop. The physical parameters of the system were obtained from the analysis of these light curves and from published spectroscopic measurements. Results. All five of our light curves satisfy the criterion for being grazing eclipses. We revise the physical parameters of the whole WASP-67 system and, in particular, significantly improve the measurements of the planet’s radius (Rb = 1.091 ± 0.046 RJup) and density (ρb = 0.292 ± 0.036 ρJup), as compared to the values in the discovery paper (Rb = 1.4 -0.2+0.3 RJup and ρb = 0.16 ± 0.08 ρJup). The transit ephemeris was also substantially refined. We investigated the variation of the planet’s radius as a function of the wavelength, using the simultaneous multi-band data, finding that our measurements are consistent with a flat spectrum to within the experimental uncertainties.
dc.relation.ispartofAstronomy & Astrophysicsen
dc.rightsReproduced with permission from Astronomy & Astrophysics, © 2014 ESOen
dc.subjectPlanetary systemsen
dc.subjectStars: fundamental parametersen
dc.subjectTechniques: photometricen
dc.subjectQD Chemistryen
dc.titlePhysical properties of the WASP-67 planetary system from multi-colour photometryen
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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