Radio Astronomical Studies of the Interstellar Medium

星际介质的射电天文学研究

• 批准号: 8818544
• 负责人: Carl Heiles
• 金额: $ 23.84万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-01 至 1992-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8818544&HistoricalAwards=false
• 关键词: Radio; Astronomical; Studies; Interstellar; Medium

With this grant Dr. Carl Heiles will continue a research program which spans many subareas under the heading of interstellar matter. The proposed research will be directed toward advancing our understanding of the morphology of the interstellar neutral atomic hydrogen in the Galaxy, the nature of the interstellar magnetic field, and the cosmic abundance of deuterium. Dr. Heiles' studies are carried out primarily through observations of spectral lines of atoms and molecules at radio wavelengths. The study of the morphology of atomic hydrogen in the Galaxy may provide important information about those cosmic processes that shape the structure of the interstellar medium, such as supernova explosions and stellar winds. The basic magnetic field studies are significant for understanding such interstellar processes as star formation, the support of gas in the Galactic halo, and the heating of the interstellar medium via various types of hydromagnetic waves. Finally, a good determination of the abundance of deuterium in a variety of astronomical sites is fundamental to cosmology.

有了这笔赠款，卡尔·海尔斯博士将继续进行一项研究计划，该计划将以星际物质为标题，跨越许多子领域。这项拟议的研究将旨在促进我们对银河系中性氢的形态、星际磁场的性质以及宇宙中氢的丰度的理解。海尔斯博士的研究主要是通过观察原子和分子在无线电波长的谱线来进行的。对银河系中氢原子形态的研究可能会提供有关那些塑造星际介质结构的宇宙过程的重要信息，如超新星爆炸和恒星风。基本的磁场研究对于理解恒星的形成、银晕中气体的支持以及通过各种类型的流体磁波加热星际介质等星际过程具有重要意义。最后，很好地确定各种天文地点的氚丰度是宇宙学的基础。