银河系中心潮汐捕获行星的动力学
Dynamics of tidally captured planets in the Galactic Center
摘要：
最近的观测表明，在我们银河系最内层的秒差距内，正在形成行星形成。超大质量黑洞（SMBH）可能会将行星或行星胚胎从其母星剥离，使它们足够接近，从而被潮汐破坏。我们调查的机会，行星潮汐捕获运行三体遭遇SMBH恒星行星系统的高精度正规化代码。我们表明，潮汐捕获的行星的轨道接近他们的母恒星。我们的结论是，被捕获的行星从SMBH的最终近心点距离将远远大于200 AU，除非它的母星已经在一个高度偏心的轨道上。
英文摘要：
Recent observations suggest ongoing planet formation in the innermost parsec of our Galaxy. The super-massive black hole (SMBH) might strip planets or planetary embryos from their parent star, bringing them close enough to be tidally disrupted. We investigate the chance of planet tidal captures by running three-body encounters of SMBH-star-planet systems with a high-accuracy regularized code. We show that tidally captured planets have orbits close to those of their parent star. We conclude that the final periapsis distance of the captured planet from the SMBH will be much larger than 200 AU, unless its parent star was already on a highly eccentric orbit.
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