3D NLTE modeling of CO line formation in cool stars

冷恒星中 CO 谱线形成的 3D NLTE 建模

• 批准号: 207506428
• 负责人: Professor Dr. Peter H. Hauschildt
• 金额: --
• 依托单位: Hamburger Sternwarte
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/207506428?language=en
• 关键词: 3D; NLTE; modeling; CO; line

The formation of CO lines in cool stellar atmospheres (including our Sun) is hard to understand in detail and requires further research. In this project we plan to investigate the effects of inhomogeneous atmospheres on the strength of the CO lines. We thus plan to extend our existing 3D radiative transfer framework to include NLTE line formation of CO molecules. The simulations will be carried out for both parameterized atmospheres and using the structures from hydrodynamical models. The results of our calculation will be compared to available observations. We will gain further significant insight into the physics of CO line formation in such stellar atmospheres and to obtain more information about their structure.

在寒冷的恒星大气（包括我们的太阳）中形成CO线很难详细了解，需要进一步的研究。在这个项目中，我们计划研究不均匀大气对CO谱线强度的影响。因此，我们计划扩展我们现有的三维辐射传输框架，包括NLTE线形成的CO分子。将对参数化大气和使用流体动力学模型的结构进行模拟。我们的计算结果将与现有的观测结果进行比较。我们将进一步深入了解在这种恒星大气中CO线形成的物理学，并获得有关其结构的更多信息。