（474640）2004 VN112-2013 RF98与OSIRIS在10.4 m处的可见光谱GTC：极端海王星外天体远日点附近二元离解的证据
Visible spectra of (474640) 2004 VN112-2013 RF98 with OSIRIS at the 10.4 m GTC: evidence for binary dissociation near aphelion among the extreme trans-Neptunian objects
摘要：
已知的极端海王星外天体（ETNO）的近日点和轨道极方向分布存在显著的各向异性，这被用来声称可能存在跨冥王星行星。在已知的ETNO中，（474640）2004 VN 112 -2013 RF 98脱颖而出。它们的轨道极、近日点方向和近日点/远日点速度相差几度，但轨道相似并不一定意味着共同的物理起源。在试图解开他们的物理性质，这两个目标的可见光谱获得了使用OSIRIS相机摄谱仪在10.4米大加那利望远镜（GTC）。从光谱分析中，我们发现474640-2013 RF 98具有相似的光谱斜率（12 vs. 15%/0.1um），与Sedna的非常不同，但与（148209）2000 CR 105和2012 VP 113的光谱斜率兼容。这五个ETNO属于与第九行星假说有关的七个ETNO。一个动力学的途径与这些研究结果一致的是解离的一个二元小行星在近距离接触的行星，我们确认其可扩展性使用N-体模拟。因此，我们得出结论，474640-2013 RF 98的动力学和光谱特性都有利于遗传联系，它们目前的轨道表明，这对恒星是被远日点附近的扰动物踢走的。
英文摘要：
The existence of significant anisotropies in the distributions of the directions of perihelia and orbital poles of the known extreme trans-Neptunian objects (ETNOs) has been used to claim that trans-Plutonian planets may exist. Among the known ETNOs, the pair (474640) 2004 VN112-2013 RF98 stands out. Their orbital poles and the directions of their perihelia and their velocities at perihelion/aphelion are separated by a few degrees, but orbital similarity does not necessarily imply common physical origin. In an attempt to unravel their physical nature, visible spectroscopy of both targets was obtained using the OSIRIS camera-spectrograph at the 10.4 m Gran Telescopio Canarias (GTC). From the spectral analysis, we find that 474640-2013 RF98 have similar spectral slopes (12 vs. 15 %/0.1um), very different from Sedna's but compatible with those of (148209) 2000 CR105 and 2012 VP113. These five ETNOs belong to the group of seven linked to the Planet Nine hypothesis. A dynamical pathway consistent with these findings is dissociation of a binary asteroid during a close encounter with a planet and we confirm its plausibility using N-body simulations. We thus conclude that both the dynamical and spectroscopic properties of 474640-2013 RF98 favour a genetic link and their current orbits suggest that the pair was kicked by a perturber near aphelion.
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。
