Physical and Chemical Processes in the Warm and Dense Interstellar Medium

在这个项目中，我们计划在保证时间的关键项目“温暖而密集的ISM”（PI：V. Ossenkopf）和“Herschel HIFI观测异常源”内对赫歇尔空间天文台上的数据进行分析和解释。我们将试图获得第一个完全自洽的物理和化学的光子主导区（PDR），星际分子云加热附近的恒星的辐射。我们将对PDR进行补充的地面观测，将其结果与Herschel数据相结合，并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，为PDR中的物理和化学创建一个数值模型。在这个拟合过程中，我们将获得有关的微观物理学的理解，这些微观物理学支配着温暖而致密的星际介质的结构和发射。

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.