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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >The unidentified diffuse interstellar bands as evidence for large organic molecules in the interstellar medium
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The unidentified diffuse interstellar bands as evidence for large organic molecules in the interstellar medium

机译：星际介质中未知的弥散星际带作为大有机分子的证据

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摘要

Since 1921, astronomers have been aware of a set of spectral absorption features that are formed in interstellar space but are not identifiable with any known atomic or molecular species. Today some 200 of these so-called diffuse interstellar bands (DIBs) are known, yet none has yet been identified unambiguously with any specific carrier. Recent evidence from astronomical observations, laboratory spectroscopy, and chemical studies suggests that the responsible species are large carbon-bearing molecules. This paper provides a brief history of the DIB problem, a review of suggested carriers, and a description and discussion of new results from the telescope and from laboratory measurements of chemical reaction rates in candidate carriers. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 89]
机译：自1921年以来，天文学家就意识到了一组在星际空间中形成的光谱吸收特征，但是这些光谱吸收特征无法用任何已知的原子或分子种类来识别。今天，这些所谓的弥漫星际频带（DIB）中约有200个是已知的，但尚未明确地与任何特定载波相鉴别。来自天文观测，实验室光谱学和化学研究的最新证据表明，负责任的物种是大的含碳分子。本文提供了DIB问题的简要历史，对建议的载剂进行了综述，并对望远镜和候选载剂中化学反应速率的实验室测量结果进行了描述和讨论。 （C）2001 Elsevier Science B.V.保留所有权利。 [参考：89]

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