Infrared Band Emission from Interstellar Space: Laboratory and Theoretical Studies

星际空间的红外波段发射：实验室和理论研究

• 批准号: 8715530
• 负责人: John Barker
• 金额: $ 26.82万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-11-01 至 1991-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8715530&HistoricalAwards=false
• 关键词: Infrared; Band; Emission; Interstellar; Space

Dr. Barker at the University of Michigan will conduct a laboratory research program to investigate the properties of polycyclic aromatic hydrocarbons (PAH). In particular, the experiments will be designed to investigate the production of infrared emission from PAH molecules which are excited by the absorption of visible and ultraviolet light. In the last few years, infrared astronomical observations have shown that many celestial objects exhibit a distinctive set of emission features which have become known as the unidentified infrared emission bands. It has been suggested that these emission bands are due to polycyclic aromatic hydrocarbon-like species in interstellar space. If this is true, then PAH's could be an abundant and very important constituent of the interstellar medium. Much laboratory work remains to be done to understand the properties of PAH's before they can be confirmed to be the sources of the observed infrared emission bands. Dr. Barker's research is an important component of the Earth-based laboratory effort.

密歇根大学的 Barker 博士将开展一项实验室研究计划，以研究多环芳烃 (PAH) 的特性。 特别是，这些实验将旨在研究多环芳烃分子因吸收可见光和紫外光而激发红外发射的情况。 在过去的几年中，红外天文观测表明，许多天体表现出一组独特的发射特征，这些特征被称为未识别的红外发射带。 有人认为这些发射带是由星际空间中的多环芳烃类物质造成的。 如果这是真的，那么多环芳烃可能是星际介质中丰富且非常重要的成分。 在确认多环芳烃是所观察到的红外发射带的来源之前，还需要做许多实验室工作来了解多环芳烃的特性。 巴克博士的研究是地球实验室工作的重要组成部分。