Bonomo, A. S., Hebrard, G., Raymond, S. N., Bouchy, F., des Etangs, A. Lecavelier, 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. and Schneider, J. (2017). A deeper view of the CoRoT-9 planetary system A small non-zero eccentricity for CoRoT-9b likely generated by planet-planet scattering. Astron. Astrophys., 603. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

CoRoT-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 the small but non-zero eccentricity of CoRoT-9b (e = 0 : 133(-0.037)(+0.042)) 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 similar to 50 M-circle plus 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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Bonomo, A. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hebrard, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Raymond, S. N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bouchy, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
des Etangs, A. LecavelierUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Borde, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aigrain, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Almenara, J. -M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alonso, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cabrera, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Csizmadia, Sz.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Damiani, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deeg, H. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deleuil, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Diaz, R. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Erikson, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fridlund, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gandolfi, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guenther, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guillot, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hatzes, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Izidoro, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lovis, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Moutou, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ollivier, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paetzold, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rauer, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rouan, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Santerne, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneider, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-225636
DOI: 10.1051/0004-6361/201730624
Journal or Publication Title: Astron. Astrophys.
Volume: 603
Date: 2017
Publisher: EDP SCIENCES S A
Place of Publication: LES ULIS CEDEX A
ISSN: 1432-0746
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
EARTH-LIKE PLANETS; GAS GIANT PLANETS; WARM JUPITERS; HARPS-N; DYNAMICAL INSTABILITIES; SOPHIE VELOCIMETRY; ORBITAL MIGRATION; STELLAR ROTATION; GAPS PROGRAM; SUPER-EARTHSMultiple languages
Astronomy & AstrophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/22563

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