Interstellar Astrochemistry

星际天体化学

• 批准号: 0702876
• 负责人: Eric Herbst
• 金额: $ 58.52万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-15 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0702876&HistoricalAwards=false
• 关键词: Interstellar; Astrochemistry

Dr. Eric Herbst (Ohio State University) will continue his research in astrochemistry. In order to understand fully what molecules reveal about the objects in which they reside, it is necessary to comprehend how the molecules are formed and destroyed. To this end Dr. Herbst has created large networks of chemical reactions, including both gas-phase and grain-surface processes. Coupled with physical models of sources, either homogeneous or heterogeneous, these chemical networks allow the modeler to calculate molecular abundances, both in the gas and on the surfaces of dust grains. Successful comparison with observational data then gives information on physical conditions and lifetimes of sources. The research builds on earlier work from this laboratory, and is mainly concerned with the process of star formation, which proceeds through a variety of different manifestations and stages. Through the study of molecular spectra, as analyzed through the prism of chemical calculations, one can begin to glimpse what is happening to gas and dust as stars form.Astrochemistry has been instrumental in the burgeoning use of molecules as probes of the interstellar medium in our galaxy and others. Much of the knowledge of diffuse and dense interstellar clouds, and especially star and planetary formation, now comes from an understanding of what molecules in these regions are telling us. The field of molecular astronomy has become a worldwide endeavor in which observational astronomers, theoretical chemists, experimental scientists, and modelers collaborate on problems of mutual interest. In addition to working with both students and postdoctoral associates in his research, Dr. Herbst has tried to make the field known both to scientists in other fields and to the lay public by giving large numbers of talks outside of astronomy departments, publishing review articles, giving interviews for magazines and newspapers, and by going to local elementary, middle, and high schools to discuss the molecular universe. In addition, Dr. Herbst now runs a mini-conference on astrochemistry each June as part of the larger international spectroscopy symposium held in Columbus.

俄亥俄州立大学埃里克·赫布斯特（Eric Herbst）博士将继续他的星体化学研究。 为了充分了解分子揭示其居住的对象的哪些分子，有必要理解分子如何形成和破坏。 为此，Herbst博士建立了大型化学反应网络，包括气相和晶粒表面工艺。这些化学网络与均质或异质的物理模型相结合，使建模者可以在气体和灰尘晶粒的表面计算分子丰度。然后，与观察数据的成功比较提供了有关物理条件和寿命源的信息。该研究以该实验室的早期工作为基础，主要与恒星形成过程有关，该过程通过各种不同的表现和阶段进行。通过通过化学计算的棱镜进行分析的分子光谱的研究，人们可以开始瞥见气体和尘埃作为恒星形成的事物。群体化学对我们银河系和其他人的星际介质的探针持续使用了分子的兴起。现在，关于弥漫性和密集的星际云，尤其是恒星和行星形成的知识，现在来自对这些地区分子告诉我们什么的理解。分子天文学领域已成为全球范围内的努力，在该活动中，观察性天文学家，理论化学家，实验科学家和建模者就相互兴趣的问题进行了合作。 除了与学生和博士后同事一起研究外，赫布斯特博士还试图通过在天文学部门以外进行大量演讲，发表评论文章，为杂志和报纸进行访谈，并将在当地的小学，中等和高中进行讨论，以讨论其他领域的科学家，并向其他领域的科学家和外行公众知名度。 此外，Herbst博士现在每年6月举行小型会议，这是在哥伦布举行的较大国际光谱研讨会的一部分。