Studies of Interstellar/Circumstellar Metal-Containing Molecules: From the Laboratory to AGB Stars

星际/星周含金属分子的研究：从实验室到 AGB 恒星

• 批准号: 9820576
• 负责人: Lucy Ziurys
• 金额: $ 23.48万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-01 至 2002-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9820576&HistoricalAwards=false
• 关键词: Studies; Interstellar; Circumstellar; Metal; Containing

Ziurys, LucyUniversity of ArizonaAST-9820576Dr. Ziurys continues her program of investigation of the chemistry of the metallic elements in the interstellar medium through a joint laboratory and observational program. The observations are designed to identify the major molecular carriers of the metallic elements in circumstellar envelopes of evolved stars and in dense clouds through millimeter/sub-mm observations. The laboratory work supplies the spectra from which rest frequencies for the astronomical searches are obtained. Studies will begin toward IRC+10216, but then will be extended to other stars, both in the AGB and post-AGB phase, and to molecular clouds. Her goal is to construct a complete picture of metal-containing molecules, their abundances, formation mechanisms, and significance for understanding mass loss of the heavier elements from circumstellar envelopes to the interstellar medium.

Ziurys, Lucy 亚利桑那大学AST-9820576Dr.齐乌里斯通过联合实验室和观测计划继续她对星际介质中金属元素化学的研究计划。 这些观测旨在通过毫米/亚毫米观测来识别演化恒星的星周包膜和致密云中金属元素的主要分子载体。 实验室工作提供了光谱，从中可以获得天文搜索的静止频率。 研究将从 IRC+10216 开始，但随后将扩展到其他恒星（包括 AGB 阶段和后 AGB 阶段）以及分子云。 她的目标是构建含金属分子、其丰度、形成机制的完整图像，以及对于理解较重元素从星际包层到星际介质的质量损失的意义。