J/A+A/571/A37ivo://CDS.VizieR/J/A+A/571/A37doi:10.26093/cds/vizier.35710037CDSSanterne A.Hebrard G.Deleuil M.Havel M.Correia A.C.M.,Almenara J.-M.Alonso R.Arnold L.Barros S.C.C.Behrend R.,Bernasconi L.Boisse I.Bonomo A.S.Bouchy F.Bruno G.,Damiani C.Diaz R.F.Gravallon D.Guillot T.Labrevoir O.,Montagnier G.Moutou C.Rinner C.Santos N.C.Abe L.Audejean M.,Bendjoya P.Gillier C.Gregorio J.Martinez P.Michelet J.,Montaigut R.Poncy R.Rivet J.-P.Rousseau G.Roy R.Suarez O.,Vanhuysse M.Verilhac D.2017-06-20T13:16:56Z2014-11-04T13:50:46ZCDS support team

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

cds-question@unistra.frmultiple-starsccd-photometryradial-velocityspectroscopyIn this paper we report a new transiting warm giant planet: KOI-1257b. It was first detected in photometry as a planet-candidate by the Kepler space telescope and then validated thanks to a radial velocity follow-up with the SOPHIE spectrograph. It orbits its host star with a period of 86.647661d+/-3s and a high eccentricity of 0.772+/-0.045. The planet transits the main star of a metal-rich, relatively old binary system with stars of mass of 0.99+/-0.05M_{sun}_ and 0.70+/-0.07M_{sun}_ for the primary and secondary, respectively. This binary system is constrained thanks to a self-consistent modelling of the Kepler transit light curve, the SOPHIE radial velocities, line bisector and full-width half maximum (FWHM) variations, and the spectral energy distribution. However, future observations are needed to confirm it. The PASTIS fully-Bayesian software was used to validate the nature of the planet and to determine which star of the binary system is the transit host. By accounting for the dilution from the binary both in photometry and in radial velocity, we find that the planet has a mass of 1.45+/-0.35M_jup_, and a radius of 0.94+/-0.12R_jup_, and thus a bulk density of 2.1+/-1.2g/cm^3^. The planet has an equilibrium temperature of 511+/-50K, making it one of the few known members of the warm-Jupiter population. The HARPS-N spectrograph was also used to observe a transit of KOI-1257b, simultaneously with a joint amateur and professional photometric follow-up, with the aim of constraining the orbital obliquity of the planet. However, the Rossiter-McLaughlin effect was not clearly detected, resulting in poor constraints on the orbital obliquity of the planet.2014A&A...571A..37Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/571/A37CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/528/A63 : Velocitometry transit of KOI-428b (Santerne+, 2011)J/A+A/544/L12 : Velocitometry transit of KOI-13 (Santerne+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/571/A37https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/571/A37http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/571/A37https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/571/A37https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/571/A37http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/571/A37GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/571/A37/photPhotometric observations of KOI-1257recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeBarycentric Dynamical Julian Date (BJD-2456560)dtime.epochdoubleFlux[0.9776/1.0232] Normalised fluxphot.flux;arith.ratiofloate_FluxUncertainty on the normalised fluxstat.error;phot.fluxfloatInstInstrument (1)meta.id;instrcharJ/A+A/571/A37/rvconstSOPHIE radial velocities of the constant star HD185144recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeBarycentric Dynamical Julian Datedtime.epochdoubleRVRadial velocity valuekm/sphys.veloc;pos.heliocentricfloate_RVRadial velocity uncertaintykm/sstat.errorfloatVspanBisector span as defined in Boisse et al. (2011A&A...528A...4B)km/sphys.velocfloate_VspanUncertainty on Vspankm/sstat.errorfloatFWHMFull Width Half Maximum of the CCFkm/sspect.line.widthfloate_FWHMFWHM uncertaintykm/sstat.error;phys.angSizefloatSNRSignal-to-noise ratio per pixel at 550nmstat.snrintJ/A+A/571/A37/rvkoiSOPHIE and HARPS-N radial velocities of KOI-1257recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeBarycentric Dynamical Julian Datedtime.epochdoubleRV[3.1/10.2] Radial velocity valuekm/sphys.veloc;pos.heliocentricfloate_RV[0.01/0.05] Radial velocity uncertaintykm/sstat.errorfloatVspanBisector span as defined in Boisse et al. (2011A&A...528A...4B)km/sphys.velocfloate_Vspan[0.02/0.09] Uncertainty on Vspankm/sstat.errorfloatFWHMFull Width Half Maximum of the CCFkm/sspect.line.widthfloate_FWHMFWHM uncertaintykm/sstat.error;phys.angSizefloatTexpExposure timestime.duration;obs.exposureintSNR[8/22] Signal-to-noise ratio per pixel at 550nmstat.snrintMoon[0/1] Presence of the Moon flagmeta.codeintInstInstrument ("HARPS-N" or "SOPHIE HE")meta.id;instrchar