标题： 论冥王星系统的起源 显示英文标题

标题： On the Origin of the Pluto System

摘要： 本章的目标是根据在冥王星发现后的85年间，观测约束条件显著改进的背景下，回顾冥王星系统的起源假设。 我们重点关注目前被认为最可能的冥王星-卡戎双星的巨型撞击假说，并特别关注外太阳系行星形成和迁移的新模型。 我们讨论该系统四个小卫星带来的起源难题。 我们还详细阐述这些情景对早期海王星外盘动力环境的影响，发现冥王星碰撞家族的可能性，以及柯伊伯带中其他双星系统的起源。 最后，我们强调关于冥王星系统起源的未解问题，并提出未来研究的方向。 显示英文摘要

摘要： The goal of this chapter is to review hypotheses for the origin of the Pluto system in light of observational constraints that have been considerably refined over the 85-year interval between the discovery of Pluto and its exploration by spacecraft. We focus on the giant impact hypothesis currently understood as the likeliest origin for the Pluto-Charon binary, and devote particular attention to new models of planet formation and migration in the outer solar system. We discuss the origins conundrum posed by the system's four small moons. We also elaborate on the implications of these scenarios for the dynamical environment of the early transneptunian disk, the likelihood of finding a Pluto collisional family, and the origin of other binary systems in the Kuiper belt. Finally, we highlight outstanding open issues regarding the origins of the Pluto system and suggest areas of future progress.