论文标题
部分可观测时空混沌系统的无模型预测
Comets and Planetesimal Formation
论文作者
论文摘要
在本章中，我们回顾了行星和彗星形成所涉及的过程。我们将从对灰尘颗粒生长的物理学的描述以及如何通过形成行星形成的磁盘中的气盘相互作用来介导的物理学开始。然后，我们将深入研究行星形成的各种模型，描述这些行星如何形成以及它们的结构。在此过程中，我们关注并比较了行星形成的两个范式：颗粒过度密度的重力崩溃（可以通过多种机制产生），以及通过碰撞和重力凝血将颗粒的生长到行星中。最后，我们将这些模型的预测与Rosetta和New Horizons任务收集的数据进行了比较，并通过观察到远处的Kuiper带对象获得的数据。
In this chapter, we review the processes involved in the formation of planetesimals and comets. We will start with a description of the physics of dust grain growth and how this is mediated by gas-dust interactions in planet-forming disks. We will then delve into the various models of planetesimal formation, describing how these planetesimals form as well as their resulting structure. In doing so, we focus on and compare two paradigms for planetesimal formation: the gravitational collapse of particle over-densities (which can be produced by a variety of mechanisms) and the growth of particles into planetesimals via collisional and gravitational coagulation. Finally, we compare the predictions from these models with data collected by the Rosetta and New Horizons missions and that obtained via observations of distant Kuiper Belt Objects.
