Detalhes bibliográficos
| Resumo: | 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 () 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 ∼ 50 M⊕ 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. |
|---|
| Autores principais: | Bonomo, A. S. |
|---|
| Outros Autores: | Hébrard, G.; Raymond, S. N.; Bouchy, F.; Lecavelier Des Etangs, A.; Bordé, P.; Aigrain, S.; Almenara, J. M.; Alonso, R.; Cabrera, J.; Csizmadia, Sz.; Damiani, C.; Deeg, H. J.; Deleuil, M.; Díaz, R. F.; Erikson, A.; Fridlund, M.; Gandolfi, D.; Guenther, E.; Guillot, T.; Hatzes, A.; Izidoro, A.; Lovis, C.; Moutou, C.; Ollivier, M.; Pätzold, M.; Rauer, H.; Rouan, D.; Santerne, A.; Schneider, J. |
|---|
| Assunto: | Planetary systems Stars: Individual: CoRoT-9 Techniques: Photometric Techniques: Radial velocities |
|---|
| Ano: | 2018 |
|---|
| País: | Brasil |
|---|
| Tipo de documento: | artigo |
|---|
| Tipo de acesso: | acesso aberto |
|---|
| Instituição associada: | IBICT |
|---|
| Idioma: | inglês |
|---|
| Origem: | Oasisbr |
|---|