J/MNRAS/454/3094ivo://CDS.VizieR/J/MNRAS/454/3094doi:10.26093/cds/vizier.74543094CDSSouthworth J.Mancini L.Tregloan-Reed J.Calchi Novati S.Ciceri S.,D'Ago G.Delrez L.Dominik M.Evans D.F.Gillon M.Jehin E.,Jorgensen U.G.Haugbolle T.Lendl M.Arena C.Barbieri L.Barbieri M.,Corfini G.Lopresti C.Marchini A.Marino G.Alsubai K.A.Bozza V.,Bramich D.M.Figuera Jaimes R.Hinse T.C.Henning TH.Hundertmark M.,Juncher D.Korhonen H.Popovas A.Rabus M.Rahvar S.Schmidt R.W.,Skottfelt J.Snodgrass C.Starkey D.Surdej J.Wertz O.2024-08-15T20:16:06Z2018-01-29T13:33:40ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsinfrared-photometryvisible-astronomybroad-band-photometryTransits in the WASP-57 planetary system have been found to occur half an hour earlier than expected. We present 10 transit light curves from amateur telescopes, on which this discovery was based, 13 transit light curves from professional facilities which confirm and refine this finding, and high-resolution imaging which show no evidence for nearby companions. We use these data to determine a new and precise orbital ephemeris, and measure the physical properties of the system. Our revised orbital period is 4.5 s shorter than found from the discovery data alone, which explains the early occurrence of the transits. We also find both the star and planet to be larger and less massive than previously thought. The measured mass and radius of the planet are now consistent with theoretical models of gas giants containing no heavy-element core, as expected for the subsolar metallicity of the host star. Two transits were observed simultaneously in four passbands. We use the resulting light curves to measure the planet's radius as a function of wavelength, finding that our data are sufficient in principle but not in practise to constrain its atmospheric properties. We conclude with a discussion of the current and future status of transmission photometry studies for probing the atmospheres of gas-giant transiting planets.2015MNRAS.454.3094Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/454/3094CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/707/167 : Transiting planetary system WASP-18 (Southworth+, 2009)J/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009)J/MNRAS/399/287 : Transiting planetary system WASP-4 (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/426/1338 : Transiting planetary system WASP-17 (Southworth+, 2012)J/A+A/562/A126 : Light curves of WASP-80 transit events (Mancini+, 2014)J/A+A/568/A127 : Light curves of WASP-67 transit events (Mancini+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/454/3094https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/454/3094http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/454/3094https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/454/3094https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/454/3094http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/454/3094GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/MNRAS/454/3094/table3Defocussed photometry for the transiting extrasolar planetary system WASP-57recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument used for observationinstr.setupcharFilter[ugriz R bb] Filterinstr.bandpasscharBJDBarycentric Julian Date (TDB)dtime.epochdoubleDmagDifferencial magnitude in Filtermagphot.mag;arith.diffdoublee_DmagUncertainty in Dmagmagstat.error;phot.mag;arith.diffdouble