期刊
ASTROPHYSICAL JOURNAL
卷 715, 期 2, 页码 803-822出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/715/2/803
关键词
celestial mechanics; chaos; gravitation; planets and satellites: dynamical evolution and stability; planets and satellites: formation; scattering
资金
- NASA [NNX09AB35G]
- JPL [1326409]
- Science and Technology Facilities Council [ST/G00269X/1] Funding Source: researchfish
- STFC [ST/G00269X/1] Funding Source: UKRI
The discovery of multi-planet extrasolar systems has kindled interest in using their orbital evolution as a probe of planet formation. Accurate descriptions of planetary orbits identify systems that could hide additional planets or be in a special dynamical state, and inform targeted follow-up observations. We combine published radial velocity data with Markov Chain Monte Carlo analyses in order to obtain an ensemble of masses, semimajor axes, eccentricities, and orbital angles for each of the five dynamically active multi-planet systems: HD 11964, HD 38529, HD 108874, HD 168443, and HD 190360. We dynamically evolve these systems using 52,000 long-term N-body integrations that sample the full range of possible line-of-sight and relative inclinations, and we report on the system stability, secular evolution, and the extent of the resonant interactions. We find that planetary orbits in hierarchical systems exhibit complex dynamics and can become highly eccentric and maybe significantly inclined. Additionally, we incorporate the effects of general relativity in the long-term simulations and demonstrate that it can qualitatively affect the dynamics of some systems with high relative inclinations. The simulations quantify the likelihood of different dynamical regimes for each system and highlight the dangers of restricting simulation phase space to a single set of initial conditions or coplanar orbits.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据