J/A+A/603/A43ivo://CDS.VizieR/J/A+A/603/A43doi:10.26093/cds/vizier.36030043CDSBonomo A.S.Hebrard G.Raymond S.N.Bouchy F.Lecavelier des Etangs A.,Borde P.Aigrain S.Almenara J.-M.Alonso R.Cabrera J.Csizmadia Sz.,Damiani C.Deeg H.J.Deleuil M.Diaz R.F.Erikson A.Fridlund M.,Gandolfi D.Guenther E.Guillot T.Hatzes A.Izidoro A.Lovis C.,Moutou C.Ollivier M.Paetzold M.Rauer H.Rouan D.Santerne A.,Schneider J.2018-01-11T11:09:35Z2018-01-11T12:09:04ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsradial-velocityCoRoT-9b is one of the rare long-period (P=95.3days) transiting giant planets with a measured mass known to date. We present a new analysis of the CoRoT-9 system based on five years of radial-velocity (RV) monitoring with HARPS and three new space-based transits observed with CoRoT and Spitzer. Combining our new data with already published measurements we redetermine the CoRoT-9 system parameters and find good agreement with the published values. We uncover a higher significance for the small but non-zero eccentricity of CoRoT-9b (e=0.133^+0.042^_-0.037_) and find no evidence for additional planets in the system. We use simulations of planet-planet scattering to show that the eccentricity of CoRoT-9b may have been generated by an instability in which a ~50M_{earth}_ planet was ejected from the system. This scattering would not have produced a spin-orbit misalignment, so we predict that the CoRoT-9b orbit should lie within a few degrees of the initial plane of the protoplanetary disk. As a consequence, any significant stellar obliquity would indicate that the disk was primordially tilted.2017A&A...603A..43Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/603/A43CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/corot : CoRoT observation log (N2-4.4) (CoRoT 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/603/A43https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/603/A43http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/603/A43https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/603/A43https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/603/A43http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/603/A43GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/603/A43/table1HARPS radial-velocity measurements of CoRoT-9 (CoRoT 105891283)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2450000)dtime.epochdoublen_BJD[*] * for measurements corrected for moonlight pollutionmeta.notecharRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloatBisBisector span (error bars are twice those of the RVs)km/sphys.velocfloatTexpDuration of each individual exposurestime.duration;obs.exposureintS/NSignal-to-noise ratio per pixel at 550nmstat.snrfloat