Apsidal corotation in mean motion resonance: the 55 Cancri system as an example

被引：20
作者：
Zhou, LY
Lehto, HJ
Sun, YS
Zheng, JQ
机构：
[1] Tuorla Observ, Piikkio 21500, Finland
[2] Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
[3] Turku Univ, Dept Phys, Turku 20500, Finland
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2004年 / 350卷 / 04期
关键词：
methods : numerical; celestial mechanics; stars : individual : 55 Cancri; planetary systems : formation;
D O I：
10.1111/j.1365-2966.2004.07755.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The inner two planets around 55 Cancri were found to be trapped in a 3:1 mean motion resonance (MMR). In this paper, we study the dynamics of this extrasolar planetary system. Our numerical investigation confirms the existence of the 3:1 resonance and implies a complex orbital motion. Different stable motion types, with and without apsidal corotation, are found. Owing to the high eccentricities in this system, we apply a semi-analytical method based on a new expansion of the Hamiltonian of the planar three-body problem in the discussion. We analyse the occurrence of apsidal corotation in this MMR and its influence on the stability of the system.
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收藏
页码：1495 / 1502
页数：8
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