Composition of planets with an N-body-Monte-Carlo approach

采用 N 体蒙特卡罗方法的行星组成

• 批准号: 362460405
• 负责人: Professor Dr. Cornelis Petrus Dullemond
• 金额: --
• 依托单位: Max-Planck-Institut für Astronomie (MPIA)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/362460405?language=en
• 关键词: Composition; planets; body; Monte; Carlo

With exoplanet spectroscopy and mass/radius relations we are obtaining more and more insight into the composition of extrasolar planets. Current data suggests a large diversity. A big question is: is this diversity due to different initial conditions of the circumstellar protoplanetary disks in which these planets are formed? Or is it because of the intrinsically chaotic nature of the formation of multi-planet systems? The goal of this project is to develop a new hybrid N-body-Monte-Carlo code that will be able to address questions such as these, and can follow the path that different constituents (such as silicates, metals and various ice species) follow from the initial dust phase to the final rocky and gaseous planets. The code will be very modular, so that it can be easily adaptable to different tasks. And we intend to make it publicly available, first within the SPP and later completely.

有了系外行星光谱和质量/半径关系，我们对太阳系外行星的组成有了越来越多的了解。目前的数据表明，它们存在很大的多样性。一个很大的问题是：这种多样性是由于形成这些行星的恒星周围原行星盘的不同初始条件造成的吗？或者是因为多行星系统的形成本质上是混乱的？这个项目的目标是开发一种新的混合N体-蒙特卡罗程序，它将能够解决这样的问题，并可以跟踪不同的成分(如硅酸盐、金属和各种冰物种)从最初的尘埃阶段到最终的岩石和气体行星所遵循的路径。代码将非常模块化，因此它可以很容易地适应不同的任务。我们打算将其公开，首先在SPP内，然后完全公开。