| Full text | |
| Author(s): |
Rodriguez, A.
;
Callegari, Jr., N.
;
Correia, A. C. M.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | Monthly Notices of the Royal Astronomical Society; v. 463, n. 3, p. 3249-3259, DEC 2016. |
| Web of Science Citations: | 4 |
| Abstract | |
We investigate the orbital and rotational evolution of the CoRoT-7 two-planet system, assuming that the innermost planet behaves like a Maxwell body. We numerically resolve the coupled differential equations governing the instantaneous deformation of the inner planet together with the orbital motion of the system. We show that, depending on the relaxation time for the deformation of the planet, the orbital evolution has two distinct behaviours: for relaxation times shorter than the orbital period, we reproduce the results from classic tidal theories, for which the eccentricity is always damped. However, for longer relaxation times, the eccentricity of the inner orbit is secularly excited and can grow to high values. This mechanism provides an explanation for the present high eccentricity observed for CoRoT-7 b, as well as for other close-in super-Earths in multiple planetary systems. (AU) | |
| FAPESP's process: | 13/21891-0 - Study of the rotation on extrasolar planetary systems and the implications in the orbital evolution |
| Grantee: | Adrian Rodriguez Colucci |
| Support Opportunities: | Scholarships in Brazil - Young Researchers |
| FAPESP's process: | 13/16771-6 - Study of the rotation on extrasolar planetary systems and the implications in the orbital evolution |
| Grantee: | Adrian Rodriguez Colucci |
| Support Opportunities: | Research Grants - Young Investigators Grants |