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arXiv 1102.0513astro-ph.EPastro-ph.SR
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行星、褐矮星和伴星潮汐捕获的新处方

Towards a New Prescription for the Tidal Capture of Planets, Brown Dwarfs and Stellar Companions

N. Madappatt Alikutty, O. De Marco, J. Nordhaus, M. Wardle

摘要:

我们研究了行星伴星在红巨星分支阶段随主星演化的轨道演化。我们的目标是确定一个处方的捕获半径和捕获时间尺度的同伴在广泛的群众,从行星到恒星,包括一个非常数f参数的影响。我们的初步结果重现了过去的发现。根据我们的研究,在红巨星分支期间的质量损失不会显著影响行星的半长轴,对于1.5 M的恒星,捕获半径约为300 R或1.4 AU。

英文摘要:

We study the evolution of the orbit of a planetary companion as the primary star evolves during the red giant branch phase. Our aim is to determine a prescription for the capture radius and capture timescales for companions in a wide range of masses, from planet to star, including the effect of a non constant f parameter. Our initial results reproduce past findings. According to our study the mass-loss during the red giant branch does not significantly affect the semi major axis of the planet and for a 1.5 M star the capture radius is approximately 300 R or 1.4 AU.

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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