J/MNRAS/450/1760ivo://CDS.VizieR/J/MNRAS/450/1760doi:10.26093/cds/vizier.74501760CDSTregloan-Reed J.Southworth J.Burgdorf M.Calchi Novati S.Dominik M.,Finet F.Jorgensen U.G.Maier G.Mancini L.Prof S.Ricci D.,Snodgrass C.Bozza V.Browne P.Dodds P.Gerner T.Harpsoe K.,Hinse T.C.Hundertmark M.Kains N.Kerins E.Liebig C.Penny M.T.,Rahvar S.Sahu K.Scarpetta G.Schafer S.Schonebeck F.Skottfelt J.,Surdej J.2024-08-14T20:21:37Z2018-05-24T12:40:57ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmultiple-starssolar-system-planetsphotometryWe 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+/-0.063M_{sun}_ and 0.864+/-0.024R_{sun}_, respectively. For the planet, we find a mass of 0.485+/-0.027M_Jup_, a radius of 1.230+/-0.035R_Jup_ and a density of 0.244+/-0.014{rho}_Jup_. 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+/-0.15d and 1.78+/-0.20km/s, respectively, at a colatitude of 75.8{deg}. We find that the sky-projected angle between the stellar spin axis and the planetary orbital axis is {lambda}=7.2{deg}+/-3.7{deg}, 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.2015MNRAS.450.1760Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/450/1760CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009)J/MNRAS/399/287 : Transiting planetary system WASP-4 (Southworth+, 2009)J/ApJ/707/167 : Transiting planetary system WASP-18 (Southworth+, 2009)J/MNRAS/408/1680 : Transiting planetary system WASP-2 (Southworth+, 2010)J/A+A/527/A8 : Transiting planetary system WASP-7 (Southworth+, 2011)J/MNRAS/420/2580 : Four transits of HAT-P-13 (Southworth+, 2012)J/MNRAS/422/3099 : Transits of HAT-P-5 (Southworth+, 2012)J/MNRAS/426/1338 : Transiting planetary system WASP-17 (Southworth+, 2012)J/MNRAS/428/3671 : Transiting planet WASP-19b (Tregloan-Reed+, 2013)J/MNRAS/431/966 : Transiting planet WASP-50b (Tregloan-Reed+, 2013)J/MNRAS/434/1300 : Planetary systems WASP-15, WASP-16 (Southworth+, 2013)J/MNRAS/444/776 : WASP-24, WASP-25 and WASP-26 (Southworth+, 2014)J/MNRAS/447/711 : Transiting planetary system WASP-103 (Southworth+, 2015)J/MNRAS/454/3094 : Transiting planetary system WASP-57 (Southworth+, 2016)J/MNRAS/457/4205 : WASP-22, WASP-41, WASP-42 and WASP-55 (Southworth+, 2016)J/AJ/153/191 : Transiting planetary system GJ 1132 (Southworth+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/450/1760https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/450/1760http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/450/1760https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/450/1760https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/450/1760http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/450/1760GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/MNRAS/450/1760/wasp6Photometry of WASP-6recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric JD for the midpoint of observation (TDB)dtime.epochdoubledmagDifferential magnitude in the Bessell R filtermagphot.mag;arith.diffdoublee_dmagMeasurement error of the differential magnitudemagstat.error;phot.magdouble