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A deeper view of the CoRoT-9 planetary system. A small non-zero eccentricity for CoRoT-9b likely generated by planet-planet scattering

dc.contributor.authorBONOMO, A. S.
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorHÉBRARD, G.
hal.structure.identifierECLIPSE 2017
dc.contributor.authorRAYMOND, Sean N.
hal.structure.identifierObservatoire de Haute-Provence [OHP]
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorBOUCHY, F.
dc.contributor.authorLECAVELIER DES ETANGS, A.
hal.structure.identifierECLIPSE 2017
dc.contributor.authorBORDÉ, Pascal
dc.contributor.authorAIGRAIN, S.
hal.structure.identifierInstituto de Astrofisica de Canarias [IAC]
dc.contributor.authorALMENARA, J.-M.
hal.structure.identifierCentro de Biología Molecular Severo Ochoa [Madrid] [CBMSO]
dc.contributor.authorALONSO, R.
hal.structure.identifierInstitut de Radioprotection et de Sûreté Nucléaire [IRSN]
dc.contributor.authorCABRERA, J.
dc.contributor.authorCSIZMADIA, Sz.
dc.contributor.authorDAMIANI, C.
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorDEEG, H. J.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorDELEUIL, M.
dc.contributor.authorDÍAZ, R. F.
hal.structure.identifierDLR Institute of Planetary Research
dc.contributor.authorERIKSON, A.
hal.structure.identifierResearch and Scientific Support Department, ESTEC [RSSD]
dc.contributor.authorFRIDLUND, M.
hal.structure.identifierDepartment of Brain and Behavioural Sciences
dc.contributor.authorGANDOLFI, D.
dc.contributor.authorGUENTHER, E.
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorGUILLOT, T.
hal.structure.identifierThüringer Landessternwarte Tautenburg [TLS]
dc.contributor.authorHATZES, A.
dc.contributor.authorIZIDORO, A.
hal.structure.identifierObservatoire Astronomique de l'Université de Genève [ObsGE]
dc.contributor.authorLOVIS, C.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorMOUTOU, C.
hal.structure.identifierAGROCAMPUS OUEST
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorOLLIVIER, M.
hal.structure.identifierRhenish Institute for Environmental Research [RIU]
dc.contributor.authorPÄTZOLD, M.
hal.structure.identifierDLR Institut für Planetenforschung
dc.contributor.authorRAUER, H.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorROUAN, D.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorSANTERNE, A.
hal.structure.identifierLaboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.authorSCHNEIDER, J
dc.date.issued2017-03
dc.identifier.issn0004-6361
dc.description.abstractEnCoRoT-9b is one of the rare long-period (P=95.3 days) 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 CoRoT-9b's small but non-zero eccentricity ($e=0.133^{+0.042}_{-0.037}$) and find no evidence for additional planets in the system. We use simulations of planet-planet scattering to show that CoRoT-9b's eccentricity may have been generated by an instability in which a $\sim 50~M_\oplus$ planet was ejected from the system. This scattering would not have produced a spin-orbit misalignment, so we predict that CoRoT-9b's 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.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enAstrophysics - Earth and Planetary Astrophysics
dc.title.enA deeper view of the CoRoT-9 planetary system. A small non-zero eccentricity for CoRoT-9b likely generated by planet-planet scattering
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201730624
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.identifier.arxiv1703.06477
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageid.A43
bordeaux.volume603
bordeaux.peerReviewedoui
hal.identifierhal-01493751
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01493751v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2017-03&rft.volume=603&rft.spage=id.A43&rft.epage=id.A43&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=BONOMO,%20A.%20S.&H%C3%89BRARD,%20G.&RAYMOND,%20Sean%20N.&BOUCHY,%20F.&LECAVELIER%20DES%20ETANGS,%20A.&rft.genre=article


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