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

被引：17

作者：

Rodriguez, Adrian ^{[1
]}

Giuppone, Cristian A. ^{[2
]}

Michtchenko, Tatiana A. ^{[1
]}

机构：

[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

来源：

CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY | 2013年 / 117卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

Hot Saturns; Hot super Earths; Two-planet systems; Planetary systems disruption; Tides; Exo-Trojans; EXTRASOLAR PLANETARY SYSTEMS; MEAN-MOTION RESONANCE; SHORT-PERIOD PLANETS; DYNAMIC PORTRAIT; 2-PLANET SYSTEMS; SATELLITES; DISSIPATION; CIRCULARIZATION; MIGRATION; TROJANS;

D O I：

10.1007/s10569-013-9502-y

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：59 / 74

页数：16

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