Spectroscopy of Diffuse Interstellar Bands

弥漫星际带的光谱学

• 批准号: 8722098
• 负责人: George Herbig
• 金额: $ 3.7万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-04-01 至 1991-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8722098&HistoricalAwards=false
• 关键词: Spectroscopy; Diffuse; Interstellar; Bands

Dr. Herbig will carry out observations which are designed to provide important new clues to the source of the diffuse interstellar bands which have been puzzling astronomers for many years. In an effort to correlate the strengths of the diffuse bands with local properties of the interstellar medium, Dr. Herbig will carry out high precision observations of stars imbedded in ionized hydrogen clouds and of stars behind clouds in which the coatings of interstellar dust grains have been removed. Dr. Herbig will also search for the signature of interstellar polyatomic carbon molecules which have been suggested as a carrier of the diffuse bands. A classical problem of stellar spectroscopy remains unsolved after many years; the source of the diffuse interstellar bands is still a mystery. New instrumentation, such as charge coupled devices and reticon arrays, makes a renewed observational effort to solve this problem worthwhile. Dr. Herbig is in an excellent position to provide new clues to the resolution of this puzzle.

赫比格博士将进行观测，旨在为多年来一直困扰天文学家的星际扩散带的来源提供重要的新线索。为了将弥散带的强度与星际介质的局部性质联系起来，赫比格博士将对嵌在电离氢云中的恒星以及星云背后的恒星进行高精度观测，在这些恒星中，星际尘埃颗粒的覆盖层已经被去除。赫比格博士还将寻找星际多原子碳分子的特征，这些分子被认为是扩散带的载体。多年来，恒星光谱的一个经典问题仍然没有得到解决；漫射星际带的来源仍然是一个谜。新的仪器，如电荷耦合器件和网子阵列，使得重新进行观测努力来解决这个问题是值得的。赫比格博士处于一个绝佳的位置，可以为解开这个谜团提供新的线索。