Physical and Chemical Processes in the Warm and Dense Interstellar Medium

温暖致密的星际介质中的物理和化学过程

• 批准号: 70120645
• 负责人: Privatdozent Dr. Volker Ossenkopf-Okada
• 金额: --
• 依托单位: Institut für Astrophysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/70120645?language=en
• 关键词: Physical; Chemical; Processes; Warm; Dense

Within this project we plan to perform the analysis and interpretation of the data that will be taken aboard the Herschel Space Observatory within the Guaranteed Time key projects “The warm and dense ISM” (PI: V. Ossenkopf) and “Herschel HIFI Observations of Extraordinary Sources”. We will try to obtain a first fully self-consistent picture of the physics and chemistry in photon-dominated regions (PDRs), interstellar molecular clouds heated by the radiation of nearby stars. We will perform complementary ground-based observations of the PDRs, combine their results with the Herschel data, and create a numerical model for the physics and chemistry in PDRs by iteratively improving the existing KOSMA-τ PDR model code and fitting the observed data with the model output. In the process of this fitting procedure we will obtain an understanding of the relevant microphysics governing the structure and emission of the warm and dense interstellar medium.

在这个项目中，我们计划对赫歇尔空间天文台在保证时间的关键项目“温暖和密集的ISM”（PI: V. Ossenkopf）和“赫歇尔超高分辨率观测”中获得的数据进行分析和解释。我们将尝试获得光子主导区域（pdr）中物理和化学的第一个完全自一致的图像，pdr是由附近恒星辐射加热的星际分子云。我们将对PDR进行互补的地面观测，将观测结果与Herschel数据相结合，通过迭代改进现有的KOSMA-τ PDR模型代码，并将观测数据与模型输出拟合，建立PDR中物理和化学的数值模型。在这个拟合过程中，我们将获得有关的微观物理学的理解，这些微观物理学控制着温暖而致密的星际介质的结构和发射。