可观测星际物体中的逆行轨道过剩
Retrograde orbits excess among observable interstellar objects
摘要：
在这项工作中，我们调查的轨道分布的星际物体（ISO），可观察到的未来宽领域的国家科学基金会维拉C。鲁宾天文台（VRO）。我们生成合成人口的ISO和模拟他们的星历表在一个为期10年，以选择那些可能被观察到的VRO，根据本次调查的名义特征。我们发现，人口的可观察的ISO应显着偏向于有利于逆行对象。这种偏差的强度与人口的大小频率分布（SFD）的斜率，以及与近日点距离。陡峭的SFD斜率导致逆行轨道的比例增加，并且还导致中位轨道倾角增加。另一方面，较大的近日点距离导致轨道倾角的更对称分布。我们认为这是Holetschek效应的结果，这已经被认为是造成观测偏差的长周期彗星的轨道分布。我们的发现最重要的意义是，逆行轨道的大小和近日点的距离取决于过剩。因此，逆/逆行轨道比和发现的人口的中位数倾角，反过来，可以用来估计潜在的真实人口的ISO的SFD。
英文摘要：
In this work we investigate the orbital distribution of interstellar objects (ISOs), observable by the future wide-field National Science Foundation Vera C. Rubin Observatory (VRO). We generate synthetic population of ISOs and simulate their ephemerides over a period of 10 years, in order to select those which may be observed by the VRO, based on the nominal characteristics of this survey. We find that the population of the observable ISOs should be significantly biased in favor of retrograde objects. The intensity of this bias is correlated with the slope of the size-frequency distribution (SFD) of the population, as well as with the perihelion distances. Steeper SFD slopes lead to an increased fraction of the retrograde orbits, and also of the median orbital inclination. On the other hand, larger perihelion distances result in more symmetric distribution of orbital inclinations. We believe that this is a result of the Holetschek effects, which is already suggested to cause observational bias in orbital distribution of long period comets. The most important implication of our findings is that an excess of retrograde orbits depends on the sizes and the perihelion distances. Therefore, the prograde/retrograde orbits ratio and the median inclination of the discovered population could, in turn, be used to estimate the SFD of the underlying true population of ISOs.
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。
