关于高倾角半人马座的星际起源
On the interstellar origin of high-inclination Centaurs
摘要：
在我们确定了高倾角半人马座的可能星际起源之后，Morbidelli等人（2020）发表了一份反驳，批评我们的方法和结论。在这里，我们表明批评是没有根据的。熵在过去的增加并不是访问半人马座过去轨道的统计特性的障碍，因为熵膨胀发生在一个与时间无关的守恒量周围，该守恒量解释了可能的轨道在参数空间中的聚集，称为极走廊。哥白尼原理并不意味着在太阳系中不存在不稳定运动。它阐明了动力学寿命的意义，确保起源于星子盘的半人马座能够在时间向后模拟中返回到它。我们的结论得到了已发表的独立研究的支持，这些研究表明，传统的盘弛豫模型不能解释高倾角半人马座的丰度，需要从星际介质中富集。未来对已确定的半人马座和TNO的物理观测可能会揭示太阳系出生的半人马座和星际起源的半人马座之间的相似性和差异。
英文摘要：
Following our identification of the probable interstellar origin of high-inclination Centaurs, Morbidelli et al. (2020) issued a rebuttal criticizing our methods and conclusions. Here, we show that the criticism is unfounded. Entropy's increase in the past is not an obstacle to accessing the statistical properties of Centaur past orbits as entropic expansion occurs around a time-independent conserved quantity that explains the probable orbits' clustering in parameter space, known as the polar corridor. The Copernican principle does not imply that unstable motion does not exist in the solar system. It clarifies the meaning of the dynamical lifetime ensuring that Centaurs originating in the planetesimal disc are able to return to it in the time-backward simulation. Our conclusions are supported by published independent research that shows conventional disc relaxation models do not explain the abundance of high inclination Centaurs and that enrichment from the interstellar medium is required. Future physical observations of the identified Centaurs and TNOs are likely to reveal the similarities and differences between solar system-born and interstellar origin Centaurs.
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。
