论文标题
关闭TNO通道，作为超宽kuiper带二进制的起源和演变的驱动力
Close TNO Passages as a Driver of the Origin and Evolution of Ultra-Wide Kuiper Belt Binaries
论文作者
论文摘要
在经典柯伊伯带的动态冷低倾斜部分中，存在着具有许多异常特性的弱结合的二元系统的人群。其中最值得注意的是它们极宽的轨道分离；超过7％的山地半径。在过去的假设是，这些超宽型北极二进制二进制（TNB）的稳定性和演变已在过去的假设中进行了广泛的研究，即主要发展的机制是二进制组件之间的相互作用和影响跨性别型物体（TNOS）之间的相互作用。在这里，我们相反研究了它们的进化，这是由于紧密传递但没有影响的TNO的重力扰动所驱动的。通过模拟这些段落，我们表明，相遇的总体影响数十亿年对Kuiper Belt二进制二元进化产生了重大影响。此类过程会导致随着时间的流逝显着扩大紧密的二进制，有时甚至超过了最宽的已知TNB的分离。我们还发现，可以从这种扩大的二进制室中取样观察到的超宽TNB的偏心率和倾斜度分布。尽管我们无法产生足够的二进制文件来解释它们的丰度，但我们生产的二进制物的轨道特性与已知的宽二进制物一致。
Within the dynamically cold low inclination portion of the Classical Kuiper Belt, there exists a population of weakly bound binary systems with a number of unusual properties; most notable of which is their extremely wide orbital separations; beyond 7% of their Hill radii. The stability and evolution of these Ultra-Wide Trans-Neptunian Binaries (TNBs) have, in the past, been studied extensively under the assumption that the primary evolving mechanisms are interactions between the binary components and impacting Trans-Neptunian Objects (TNOs). Here, we instead study their evolution as driven by the gravitational perturbations of close passing but non-impacting TNOs. By simulating these passages, we show that the aggregate effects of encounters over billions of years have a significant effect on Kuiper Belt binary evolution. Such processes can lead to tight binaries widening significantly over time, approaching and sometimes surpassing the separation of the widest known TNBs. We also find that the eccentricity and inclination distributions of observed Ultra-Wide TNBs can be sampled from such widened binaries. While we are unable to produce enough wide binaries to explain their abundance, the orbital properties of ones we do produce are consistent with known wide binaries.
