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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Tidal evolution of close-in exoplanets in co-orbital configurations

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Author(s):
Rodriguez, Adrian [1] ; Giuppone, Cristian A. [2] ; Michtchenko, Tatiana A. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, IAG USP, Sao Paulo - Brazil
[2] Univ Nacl Cordoba, IATE, Astron Observ, RA-5000 Cordoba - Argentina
Total Affiliations: 2
Document type: Journal article
Source: CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY; v. 117, n. 1, SI, p. 59-74, SEP 2013.
Web of Science Citations: 8
Abstract

In this paper, we study the behavior of a pair of co-orbital planets, both orbiting a central star on the same plane and undergoing tidal interactions. Our goal is to investigate final orbital configurations of the planets, initially involved in the 1/1 mean-motion resonance (MMR), after long-lasting tidal evolution. The study is done in the form of purely numerical simulations of the exact equations of motions accounting for gravitational and tidal forces. The results obtained show that, at least for equal mass planets, the combined effects of the resonant and tidal interactions provoke the orbital instability of the system, often resulting in collision between the planets. We first discuss the case of two hot-super-Earth planets, whose orbital dynamics can be easily understood in the frame of our semi-analytical model of the 1/1 MMR. Systems consisting of two hot-Saturn planets are also briefly discussed. (AU)

FAPESP's process: 09/54006-4 - A computer cluster for the Astronomy Department of the University of São Paulo Institute of Astronomy, Geophysics and Atmospheric Sciences and for the Cruzeiro do Sul University Astrophysics Center
Grantee:Elisabete Maria de Gouveia Dal Pino
Support type: Multi-user Equipment Program
FAPESP's process: 09/16900-5 - Dynamical evolution of planetary systems with dissipation
Grantee:Adrian Rodriguez Colucci
Support type: Scholarships in Brazil - Post-Doctorate