U.S.-Germany Cooperative Research on the Molecular Gas Surrounding Newly Formed Massive Stars

美德合作研究新形成大质量恒星周围的分子气体

• 批准号: 9123533
• 负责人: Edward Churchwell
• 金额: $ 1.12万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9123533&HistoricalAwards=false
• 关键词: U.S.; Germany; Cooperative; Research; Molecular

This award supports Dr. Edward B. Churchwell and a graduate student of the University of Wisconsin to collaborate with Dr. Malcolm Walmsley of the Max-Planck Institute for Radioastronomy in Bonn, Germany. They are studying the conditions under which massive stars form and subsequently evolve by investigating the remaining molecular gas in which the star is embedded and the star's interaction with it. In particular, they will test the bow shock hypothesis by observing carefully selected molecular and atomic lines that probe the ionized and molecular gas. These observations will be obtained from observations at observatories in the U.S., Spain and Germany. This project is an important extension of the ongoing research of Dr. Churchwell that would not be possible without collaboration. Dr. Walmsley is an acknowledged expert on the interstellar medium in general and particularly on the computation and interpretation of the physical conditions in interstellar molecular and ionized gas clouds. These areas are particularly important to their joint research. He also provides convenient access to the 100 m telescope operated by the MPI in Germany and brings expertise in using the specialized instruments. He will also collaborate closely in developing detailed models of the molecular gas. Dr. Churchwell offers expertise in VLA measurements and will use interferometric instruments like the VLA in New Mexico to make observations in the US to study these objects with high spatial resolution. Massive stars are formed in dense condensations of molecular gas inside of giant molecular clouds. They play a crucial role in the energetics of galaxies and the interstellar medium, but their formation and early evolution are poorly understood. This project will contribute new insights into the formation of such massive stars by obtaining detailed physical parameters and spatial distribution of the surrounding hot gas.

该奖项支持爱德华B博士。丘奇韦尔和 一个大学的研究生 威斯康星州与马尔科姆博士合作 马克斯-普朗克研究所的沃尔姆斯利 德国波恩的射电天文学。 他们是 研究大规模的 恒星的形成和演化 研究剩余的分子气体 星星嵌入其中，而星星 与之互动。特别是， 通过观察来检验弓形激波假说 精心挑选的分子和原子谱线 探测电离气体和分子气体。 这些 将从观察中获得观察结果 在美国的天文台，西班牙和德国。 该项目是一个重要的延伸， 丘奇韦尔博士正在进行的研究 没有合作是不可能的。 博士 沃尔姆斯利是一位公认的 星际介质一般和特别 关于计算和解释 星际分子的物理条件 和电离气体云 这些地区 对他们的共同研究尤为重要。 他还提供了方便的访问100米 由MPI在德国操作的望远镜， 带来了专业知识， 仪器. 他还将密切合作， 在开发详细的分子模型时， 气体 Churchwell博士提供VLA方面的专业知识 并将使用干涉测量 像新墨西哥州的VLA这样的仪器 在美国的观测研究这些物体 具有高空间分辨率。 大质量恒星形成于致密的凝聚中 巨大分子内部的分子气体 云 他们在这方面发挥着至关重要的作用， 星系和星际能量学 但它们的形成和早期进化 我们对此知之甚少。 该项目将 为形成 这样的大质量恒星， 物理参数和空间分布 周围的热气。