论文标题
在高倾斜Centaurs的星际起源
On the interstellar origin of high-inclination Centaurs
论文作者
论文摘要
在我们鉴定出高融合半人马的可能星际起源之后，Morbidelli等人。 （2020）批评我们的方法和结论进行了反驳。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Centaur过去轨道统计特性的障碍，因为熵膨胀发生在时间无关的保守量围绕，该数量解释了可能的轨道在参数空间中的群集（称为极性走廊）。哥白尼原理并不意味着太阳系中不存在不稳定的运动。它阐明了动态寿命的含义，以确保源自行星光盘中的半人马能够在时机模拟中恢复到它。我们的结论得到了已发表的独立研究的支持，该研究表明，传统的椎间盘放松模型不能解释高倾斜度的精华，并且需要从星际培养基中富集。对确定的半人马场和TNO的未来物理观察可能会揭示太阳系出生和星际起源中心之间的相似性和差异。
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.
