arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.4386astro-ph.EPastro-ph.IM
收藏

模拟行星在盘中的演化

Modelling the evolution of planets in disks

Willy Kley

摘要:

为了解释太阳系外行星系的重要性质(例如。近距离热彗星、共振行星)需要一种允许行星在盘中径向迁移的进化方案。在行星形成的过程中,原行星会嵌入到行星盘中,并与行星盘产生引力作用。这种行星与行星盘的相互作用会产生作用在行星上的力矩(通过引力),从而改变行星的角动量,导致行星在行星盘中径向迁移。为了确定这个非常重要的行星形成过程的结果,需要专门的高分辨率数值模拟。这种贡献集中在一些重要方面的数值方法,我们发现获得成功的结果至关重要。我们特别提到科里奥利力的处理,笛卡尔网格,和FARGO方法。

英文摘要:

To explain important properties of extrasolar planetary systems (eg. close-in hot Jupiters, resonant planets) an evolutionary scenario which allows for radial migration of planets in disks is required. During their formation protoplanets undergo a phase in which they are embedded in the disk and interact gravitationally with it. This planet-disk interaction results in torques (through gravitational forces) acting on the planet that will change its angular momentum and result in a radial migration of the planet through the disk. To determine the outcome of this very important process for planet formation, dedicated high resolution numerical modeling is required. This contribution focusses on some important aspects of the numerical approach that we found essential for obtaining successful results. We specifically mention the treatment of Coriolis forces, Cartesian grids, and the FARGO method.

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。

↑