论文标题
磁盘诱导的Apsidal进动对被捕获为平均运动共振的行星的影响
The Effects of Disk Induced Apsidal Precession on Planets Captured into Mean Motion Resonance
论文作者
论文摘要
对行星系统的迁移过程已经进行了很好的研究，在这些行星系统中，恒星和行星仅生成引力电位。但是，大规模的原始磁盘为这些模型增加了明显的扰动。在本文中，我们考虑了两个磁盘引起的迁移行星进动的限制案例，发现少量进动显着影响通过迁移行星达到的平衡。我们通过共振和数值整合的半分析模型的结合来研究这些效果。我们还考虑了磁盘扩散的情况，可以激发出色的库幅度，并可能引起足够大的进动率的共振产生共振。这两种影响都对解释已知的系外行星种群具有影响，并且可能被证明是重要的考虑因素，因为特征良好的系外行星系统的种群不断增长。
The process of migration into resonance capture has been well studied for planetary systems where the gravitational potential is generated exclusively by the star and planets. However, massive protoplanetary disks add a significant perturbation to these models. In this paper we consider two limiting cases of disk-induced precession on migrating planets and find that small amounts of precession significantly affect the equilibrium reached by migrating planets. We investigate these effects with a combination of semi-analytic models of the resonance and numerical integrations. We also consider the case of the disk's dispersal, which can excite significant libration amplitude and can cause ejection from resonance for large enough precession rates. Both of these effects have implications for interpreting the known exoplanet population and may prove to be important considerations as the population of well-characterized exoplanet systems continues to grow.
