用于奥尔特云穿孔的巨型复仇女神候选者HD 107914 / HIP 60503
Giant Nemesis candidate HD 107914 / HIP 60503 for the perforation of Oort cloud
摘要：
到目前为止，GJ 710是已知的唯一一颗在1光年内穿过太阳系外围的恒星。我们重新检查了SIMPAD数据库中的其他恒星候选者（从最高的视差平方比到总自行），并将它们与新的HIP 2视差和已知的径向速度进行了比较。目前，最好的提名是双星HD 107914，位于半人马座，距离太阳$\approx$ 78.3 pc，其主成分是一颗白色（A型）巨星。它似乎既没有出现在SIMBAD现有的径向速度的一般目录中，也没有出现在加西亚-桑切斯等人关于恒星与太阳系相遇的权威论文中。在等待已知的视向速度$v_r$值时，我们用线性近似计算了该恒星在距太阳1 ly和1 pc范围内通过所需的$|v_r|$极限。一个非常精确的总自行值也是非常重要的。在$v_r=-100$ km/s和最“有利”的HIP 2数据的情况下，HD 107914可以通过接近8380 AU的太阳，几乎直接与太阳系内部碰撞！因此，如果$v_r$有一个很大的正值，那么HIP 60503可能是像塞德娜这样分离的海王星外天体的特殊轨道的创造者。
英文摘要：
So far, GJ 710 is the only known star supposed to pass through outskirts of the solar system within 1 ly. We have reexamined the SIMBAD database for additional stellar candidates (from highest ratios of squared parallax to total proper motion) and compared them with new HIP2 parallaxes and known radial velocities. At the moment, the best nominee is double star HD 107914 in the constellation Centaurus at $\approx$ 78.3 pc from the Sun whose principal component is a white (A-type) giant. It does not seem to appear neither in general catalogues of radial velocities available at SIMBAD nor in authoritative Garcia-Sanchez et al. papers on stellar encounters with the solar system. Awaiting for the value $v_r$ of its radial velocity, uknown to the author, we have calculated limits of $|v_r|$ necessary to this star to pass within 1 ly and 1 pc from the Sun in linear approximation. A very accurate value of its total proper motion is also extremely important. In the case of $v_r=-100$ km/s and most "advantageous" HIP2 data, HD 107914 could pass as near as 8380 AU from the Sun in an almost direct collision course with the inner part of the solar system! Inversely, if $v_r$ had a great positive value, then HIP 60503 could be the creator of peculiar trajectories of detached trans-Neptunian objects like Sedna.
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。
