| Full text | |
| Author(s): |
Folonier, Hugo
;
Ferraz-Mello, Sylvio
;
Alves-Silva, Raphael
Total Authors: 3
|
| Document type: | Journal article |
| Source: | CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY; v. 137, n. 2, p. 25-pg., 2025-04-01. |
| Abstract | |
This paper extends the creep tide theory to exoplanetary systems with significant obliquities. The extended theory allows us to obtain the stellar and planetary hydrodynamic equilibrium tides and the evolution of the rotational state of the bodies. The dynamic ellipsoidal figure of equilibrium of the body is calculated taking into account that its reaction to external forces is delayed by its viscosity. The derived equations are used to determine the motion of the tidal bulge of the planetary companion CoRoT-3b (a brown dwarf) and its host star. We show how the tides deform the figure of the companion and how its tidal bulge moves close to the substellar meridian from one hemisphere to another. The stellar lag is mostly positive and is braking the star rotation. (AU) | |
| FAPESP's process: | 16/20189-9 - Dynamic evolution due to tide in differentiated exoplanets and satellites |
| Grantee: | Hugo Alberto Folonier |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 23/03060-6 - An extension of the hydrodynamic tide model (creep tide) to the case of non-zero obliquity |
| Grantee: | Raphael Alves Silva |
| Support Opportunities: | Scholarships in Brazil - Technical Training Program - Technical Training |
| FAPESP's process: | 16/13750-6 - Brazil in space: Astrophysics and Engineering |
| Grantee: | Eduardo Janot Pacheco |
| Support Opportunities: | Special Projects |