论文标题
由于出色的飞圈，太阳系碎片磁盘的倾斜激发
Inclination Excitation of Solar System Debris Disk due to Stellar Flybys
论文作者
论文摘要
大多数恒星形成在与其他恒星相对接近的群集中形成的，并且可以在行星系统的轨道结构上留下烙印。在本文中，我们研究了由于这种出色的遇到而引起的碎屑磁盘颗粒的倾斜激发。我们得出了一个分析表达式，该表达式描述了恒星flyby遥远的分层极限中的倾斜度激发。然后，我们使用大型N体合奏模拟获得了非等级制度中相应颗粒倾斜度分布的数值结果。对于与预期参数的相遇，我们发现磁盘颗粒的大量倾斜度仍然很低。然而，对于最终的偏叶距离售价高于$ 50 $ au的颗粒，较高的倾斜度人群是由较高的恒星遇到的。倾斜分配量表的最大范围$ i_t $，遇到$ \ sin（i_s）$的倾斜度，用于较低速度的巨大恒星飞质。观察到的跨核对象的倾斜分布对我们太阳系的动态历史施加了约束。例如，这些结果暗示着太阳能出生群集的数量密度$ n $的产品的上限以及Sun的停留时间$nτ\ lyssim8 \ times10^4 $ myr pc $^{ - 3} $。可以通过外部太阳系的未来观察性调查得出更强的限制。
Most stars form in clusters where relatively close encounters with other stars are common and can leave imprints on the orbital architecture of planetary systems. In this paper, we investigate the inclination excitation of debris disk particles due to such stellar encounters. We derive an analytical expression that describes inclination excitation in the hierarchical limit where the stellar flyby is distant. We then obtain numerical results for the corresponding particle inclination distribution in the non-hierarchical regime using a large ensemble of N-body simulations. For encounters with expected parameters, we find that the bulk inclination of the disk particles remains low. However, a distinct high inclination population is produced by prograde stellar encounters for particles with final pericenter distances above $50$AU. The maximum extent $i_t$ of the inclination distribution scales with the inclination of the encounter $\sin(i_s)$ for massive star flybys with low incoming velocity. The inclination distribution of observed trans-Neptunian objects places constraints on the dynamical history of our Solar System. For example, these results imply an upper limit on product of the number density $n$ of the solar birth cluster and the Sun's residence time $τ$ of the form $nτ\lesssim8\times10^4$ Myr pc$^{-3}$. Stronger constraints can be derived with future observational surveys of the outer Solar System.
