Circum-planetary accretion disks

环绕行星吸积盘

• 批准号: 29735732
• 负责人: Professor Dr. Wilhelm Kley (†)
• 金额: --
• 依托单位: Max-Planck-Institut für Astronomie (MPIA)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/29735732?language=en
• 关键词: Circum; planetary; accretion; disks

During the early stages of the planet formation process very young protoplanets are still embedded in the circum-stellar disk from which they formed. Numerical hydrodynamic simulations of disk-planet interaction have shown that the mass accumulated by the protoplanet first circulates around it, and is then accreted via a circum-planetary sub-disk in almost Keplerian rotation.In order to further understand the accretion process onto the protoplanet, high resolution numerical simulations of the circum-planetary accretion disk are essential. We propose to perform for the first time detailed multi-dimensional hydrodynamic simulations of these circum-planetary sub-disks to determine their structure and evolution. From the calculations we will gain important information about the growth rate of protoplanetary cores, their angular momentum evolution and, thus, the time scale of planet formation.Circum-planetary disks may reach comparatively high temperatures, but are located within the surrounding cooler circum-stellar disk. From our detailed investigation of the circum-planetary disk parameter space we expect also interesting insight concerning observational properties of planetary systems in their early formation phase.

在地球形成过程的早期阶段，非常年轻的原始星网仍然嵌入它们形成的圆周磁盘中。磁盘 - 星空相互作用的数值流体动力学模拟表明，原天线堆积的质量首先围绕它循环，然后通过几乎开普勒旋转中的圆周行动子盘来进行循环。为了进一步了解Protoplanet上的增值过程，高分辨率的数值模拟是宽松的，这是宽松的。我们提议首次对这些周围的亚disks进行详细详细的多维流体动力模拟，以确定它们的结构和演变。从计算中，我们将获得有关原星核的生长速率，其角动量进化的重要信息，因此，行星形成的时间尺度可能会达到相对较高的温度，但位于周围较酷的圆周绕线磁盘中。从我们对周围星际磁盘参数空间的详细研究中，我们期望在早期地层阶段，关于行星系统的观察性特性的有趣见解。