2017A&A...603A..43B


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.14CET16:29:33

2017A&A...603A..43B - Astronomy and Astrophysics, volume 603A, 43-43 (2017/7-1)

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

BONOMO 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 S., 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., PATZOLD M., RAUER H., ROUAN D., SANTERNE A. and SCHNEIDER J.

Abstract (from CDS):

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+0.042–0.037) 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 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.

Abstract Copyright: © ESO, 2017

Journal keyword(s): planetary systems - techniques: radial velocities - techniques: photometric - stars: individual: CoRoT-9 - stars: individual: CoRoT-9

VizieR on-line data: <Available at CDS (J/A+A/603/A43): table1.dat>

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 80606b Pl 09 22 37.5769478105 +50 36 13.434928660           ~ 265 1
2 CoRoT-9 * 18 43 08.8101080314 +06 12 14.912939950   14.57 13.46 13.75   G3V 32 1
3 CoRoT-9b Pl 18 43 08.8101080314 +06 12 14.912939950           ~ 55 1

    Equat.    Gal    SGal    Ecl

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2019.11.14-16:29:33

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