J/MNRAS/514/77ivo://CDS.VizieR/J/MNRAS/514/77doi:10.26093/cds/vizier.75140077CDSMaxted P.F.L.Ehrenreich D.Wilson T.G.Alibert Y.Collier Cameron A.,Hoyer S.Sousa S.G.Olofsson G.Bekkelien A.Delrez L.Bonfanti A.,Borsato L.Alonso R.Anglada Escude G.Barczy T.Barrado D.,Barros S.C.C.Baumjohann W.Beck M.Beck T.Benz W.Billot N.,Bonfils X.Brandeker A.Broeg C.Cabrera J.Charnoz S.Csizmadia Sz.,Davies M.B.Deleuil M.Deline A.Demangeon O.D.S.Demory B.-O.,Erikson A.Floren H.G.Fortier A.Fossati L.Fridlund M.Futyan D.,Gandolfi D.Gillon M.Guedel M.Guterman P.Heng K.Isaak K.G.,Kiss L.Laskar J.Lecavelier des Etangs A.Lendl M.Lovis C.,Magrin D.Nascimbeni V.Ottensamer R.Pagano I.Palle E.Peter G.,Piotto G.Pollacco D.Pozuelos F.J.Queloz D.Ragazzoni R.Rando N.,Rauer H.Reimers C.Ribas I.Salmon S.Santos N.C.Scandariato G.,Segransan D.Simon A.E.Smith A.M.S.Steller M.Szabo Gy.M.Thomas N.,Udry S.Van Grootel V.Walton N.A.2024-08-22T20:15:56Z2022-06-09T14:45:56ZCDS support team

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

cds-question@unistra.frmultiple-starsphotometryCHEOPS (CHaracterising ExOPlanet Satellite) is an ESA S-class mission that observes bright stars at high cadence from low-Earth orbit. The main aim of the mission is to characterize exoplanets that transit nearby stars using ultrahigh precision photometry. Here we report the analysis of transits observed by CHEOPS during its Early Science observing programme for four well- known exoplanets: GJ 436 b, HD 106315 b, HD 97658 b and GJ 1132 b. The analysis is done using pycheops, an open-source software package we have developed to easily and efficiently analyse CHEOPS light curve data using state-of-the-art techniques that are fully described herein. We show that the precision of the transit parameters measured using CHEOPS is comparable to that from larger space telescopes such as Spitzer Space Telescope and Kepler. We use the updated planet parameters from our analysis to derive new constraints on the internal structure of these four exoplanets.2022MNRAS.514...77Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/514/77CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/514/77https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/514/77http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/514/77https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/514/77https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/514/77http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/514/77GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap1.9867573869263685e-19 3.916500758235022e-19defaultJ/MNRAS/514/77/table1Log of CHEOPS observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintN[1/3] Sequence numbermeta.idintTargetStar namemeta.id;meta.maincharGmagGaia G magnitudemagphot.mag;em.optfloatStartStat datestime.epochnullableDurDurationstime.durationintTexpExposure time in terms of the integration time per image multiplied by the number of images stacked on-board prior to download (NxNN)smeta.id;time.durationcharNobsNumber of observationsmeta.numberintEffFraction of the observing interval covered by valid observations of the target%time.intervalintLCShow the light curvesmeta.ref.urlcharFilekeyFile keymeta.id;meta.filecharRapAperture radius used to compute the light curve analysed in this paperpixstat.fit.paramfloatFileNameName of the table with light curve datameta.id;meta.tablecharJ/MNRAS/514/77/lc01Dataset CH_PR100041_TG000302_V0102, GJ 436recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of mid-exposuredtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiodoublee_FluxNormalized flux errorstat.error;phot.fluxdoubleFluxdNormalized flux corrected for instrumental trendsphot.flux;arith.ratiodoublexoffTarget position offset in x-directionpixpos.cartesian.x;instr.detdoubleyoffTarget position offset in y-directionpixpos.cartesian.y;instr.detdoublerollSpacecraft roll angledeginstr.offsetdoublecontamFraction of flux in aperture from nearby starsinstr.paramdoublesmearFraction of flux in aperture from readout trailsinstr.paramdoublebgFraction of flux in aperture from backgroundinstr.backgrounddoubleTemp2Temperature sensor readingphys.temperaturefloatJ/MNRAS/514/77/lc02Dataset CH_PR100041_TG000303_V0102, GJ 436recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of mid-exposuredtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiodoublee_FluxNormalized flux errorstat.error;phot.fluxdoubleFluxdNormalized flux corrected for instrumental trendsphot.flux;arith.ratiodoublexoffTarget position offset in x-directionpixpos.cartesian.x;instr.detdoubleyoffTarget position offset in y-directionpixpos.cartesian.y;instr.detdoublerollSpacecraft roll angledeginstr.offsetdoublecontamFraction of flux in aperture from nearby starsinstr.paramdoublesmearFraction of flux in aperture from readout trailsinstr.paramdoublebgFraction of flux in aperture from backgroundinstr.backgrounddoubleTemp2Temperature sensor readingphys.temperaturefloatJ/MNRAS/514/77/lc03Dataset CH_PR100041_TG001301_V0102, GJ 436recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of mid-exposuredtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiodoublee_FluxNormalized flux errorstat.error;phot.fluxdoubleFluxdNormalized flux corrected for instrumental trendsphot.flux;arith.ratiodoublexoffTarget position offset in x-directionpixpos.cartesian.x;instr.detdoubleyoffTarget position offset in y-directionpixpos.cartesian.y;instr.detdoublerollSpacecraft roll angledeginstr.offsetdoublecontamFraction of flux in aperture from nearby starsinstr.paramdoublesmearFraction of flux in aperture from readout trailsinstr.paramdoublebgFraction of flux in aperture from backgroundinstr.backgrounddoubleTemp2Temperature sensor readingphys.temperaturefloatJ/MNRAS/514/77/lc04Dataset CH_PR100041_TG000802_V0102, HD 106315recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of mid-exposuredtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiodoublee_FluxNormalized flux errorstat.error;phot.fluxdoubleFluxdNormalized flux corrected for instrumental trendsphot.flux;arith.ratiodoublexoffTarget position offset in x-directionpixpos.cartesian.x;instr.detdoubleyoffTarget position offset in y-directionpixpos.cartesian.y;instr.detdoublerollSpacecraft roll angledeginstr.offsetdoublecontamFraction of flux in aperture from nearby starsinstr.paramdoublesmearFraction of flux in aperture from readout trailsinstr.paramdoublebgFraction of flux in aperture from backgroundinstr.backgrounddoubleTemp2Temperature sensor readingphys.temperaturefloatJ/MNRAS/514/77/lc05Dataset CH_PR100041_TG001401_V0102, HD 106315recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of mid-exposuredtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiodoublee_FluxNormalized flux errorstat.error;phot.fluxdoubleFluxdNormalized flux corrected for instrumental trendsphot.flux;arith.ratiodoublexoffTarget position offset in x-directionpixpos.cartesian.x;instr.detdoubleyoffTarget position offset in y-directionpixpos.cartesian.y;instr.detdoublerollSpacecraft roll angledeginstr.offsetdoublecontamFraction of flux in aperture from nearby starsinstr.paramdoublesmearFraction of flux in aperture from readout trailsinstr.paramdoublebgFraction of flux in aperture from backgroundinstr.backgrounddoubleTemp2Temperature sensor readingphys.temperaturefloatJ/MNRAS/514/77/lc06Dataset CH_PR100041_TG001201_V0102, HD 97658recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of mid-exposuredtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiodoublee_FluxNormalized flux errorstat.error;phot.fluxdoubleFluxdNormalized flux corrected for instrumental trendsphot.flux;arith.ratiodoublexoffTarget position offset in x-directionpixpos.cartesian.x;instr.detdoubleyoffTarget position offset in y-directionpixpos.cartesian.y;instr.detdoublerollSpacecraft roll angledeginstr.offsetdoublecontamFraction of flux in aperture from nearby starsinstr.paramdoublesmearFraction of flux in aperture from readout trailsinstr.paramdoublebgFraction of flux in aperture from backgroundinstr.backgrounddoubleTemp2Temperature sensor readingphys.temperaturefloatJ/MNRAS/514/77/lc07Dataset CH_PR100041_TG000401_V0102, GJ 1132yoffTarget position offset in y-directionpixpos.cartesian.y;instr.detdoublerollSpacecraft roll angledeginstr.offsetdoublecontamFraction of flux in aperture from nearby starsinstr.paramdoublesmearFraction of flux in aperture from readout trailsinstr.paramdoublebgFraction of flux in aperture from backgroundinstr.backgrounddoubleTemp2Temperature sensor readingphys.temperaturefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of mid-exposuredtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiodoublee_FluxNormalized flux errorstat.error;phot.fluxdoubleFluxdNormalized flux corrected for instrumental trendsphot.flux;arith.ratiodoublexoffTarget position offset in x-directionpixpos.cartesian.x;instr.detdoubleJ/MNRAS/514/77/lc08Dataset CH_PR100041_TG000402_V0102, GJ 1132recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of mid-exposuredtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiodoublee_FluxNormalized flux errorstat.error;phot.fluxdoubleFluxdNormalized flux corrected for instrumental trendsphot.flux;arith.ratiodoublexoffTarget position offset in x-directionpixpos.cartesian.x;instr.detdoubleyoffTarget position offset in y-directionpixpos.cartesian.y;instr.detdoublerollSpacecraft roll angledeginstr.offsetdoublecontamFraction of flux in aperture from nearby starsinstr.paramdoublesmearFraction of flux in aperture from readout trailsinstr.paramdoublebgFraction of flux in aperture from backgroundinstr.backgrounddoubleTemp2Temperature sensor readingphys.temperaturefloatJ/MNRAS/514/77/lc09Dataset CH_PR100041_TG000403_V0102, GJ 1132smearFraction of flux in aperture from readout trailsinstr.paramdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of mid-exposuredtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiodoublee_FluxNormalized flux errorstat.error;phot.fluxdoubleFluxdNormalized flux corrected for instrumental trendsphot.flux;arith.ratiodoublexoffTarget position offset in x-directionpixpos.cartesian.x;instr.detdoubleyoffTarget position offset in y-directionpixpos.cartesian.y;instr.detdoublerollSpacecraft roll angledeginstr.offsetdoublecontamFraction of flux in aperture from nearby starsinstr.paramdoublebgFraction of flux in aperture from backgroundinstr.backgrounddoubleTemp2Temperature sensor readingphys.temperaturefloat