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首页> 外文期刊>The Astrophysical journal >ON THE FATE OF UNSTABLE CIRCUMBINARY PLANETS: TATOOINE’S CLOSE ENCOUNTERS WITH A DEATH STAR
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ON THE FATE OF UNSTABLE CIRCUMBINARY PLANETS: TATOOINE’S CLOSE ENCOUNTERS WITH A DEATH STAR

机译:关于不稳定的环形行星的命运:TATOOINE与死亡之星的近距离接触

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摘要

Circumbinary planets whose orbits become unstable may be ejected, accreted, or even captured by one of the stars. We quantify the relative rates of these channels, for a binary of secondary star's mass fraction 0.1 with an orbit of 1 AU. The most common outcome is ejection, which happens ~80% of the time. If binary systems form circumbinary planets readily and sloppily, this process may fill the Milky Way with free-floating planets. A significant fraction of the time, ~20%, the unstable planet strikes the primary or secondary. We tracked whether a Jupiter-like planet would undergo tidal stripping events during close passages, and find that these events are rarely strong enough to capture the planet, although this may be observable via free-floating planets that are heated or spun-up by this process.
机译:轨道不稳定的外行星可能会被其中一颗恒星弹出,积聚甚至捕获。我们对轨道为1 AU的次星质量分数为0.1的双星量化了这些通道的相对速率。最常见的结果是弹出,大约80%的时间发生。如果二元系统容易地,随意地形成环绕行星的行星,那么这个过程可能会使自由漂浮的行星充满银河系。在大约20%的时间内,不稳定的行星撞击主要或次要行星。我们跟踪了类似木星的行星是否在近距离通行时发生了潮汐剥离事件,并发现这些事件很少足以捕获到该行星,尽管这可以通过加热或旋转的自由漂浮行星来观察到。处理。

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