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arXiv 0711.0984astro-ph
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双星系统的长期演化

Secular Evolution of Planetary Systems in Binaries

Genya Takeda, Ryosuke Kita, Frederic A. Rasio, Samuel M. Rubinstein

摘要:

已知一颗行星围绕一个双星系统的一个组成部分的轨道偏心率有足够大的相互倾角,通过Kozai机制在长期时间尺度上振荡。我们研究了Kozai机制对双星系统的影响。一对行星在双星伴星影响下的演化顺序相当复杂。在数值模拟中可以看到各种动力学结果。一个有趣的结果是行星轨道的刚性旋转,其中行星轨道平面共同进动,而轨道偏心率同步振荡。在这种情况下,外行星充当了从双星伴星到内行星的摄动传播者,并驱动内行星轨道以比Kozai机制预测的更快的速度进动。

英文摘要:

The orbital eccentricity of a single planet around a component of a stellar binary system with a sufficiently large mutual inclination angle is known to oscillate on a secular timescale through the Kozai mechanism. We have investigated the effects of the Kozai mechanism on double-planet systems in binaries. The evolutionary sequence of a pair of planets under the influence of a binary companion is fairly complex. Various dynamical outcomes are seen in numerical simulations. One interesting outcome is the rigid rotation of the planetary orbits in which the planetary orbital planes secularly precess in concert, while the orbital eccentricities oscillate synchronously. In such cases the outer planet acts as a propagator of the perturbation from the binary companion to the inner planet and drives the inner planetary orbit to precess at a rate faster than what is predicted by the Kozai mechanism.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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