Comments on the origins of the diffuse interstellar bands
Comments on the origins of the diffuse interstellar bands
复制标题
对弥漫星际带起源的评论
DOI：
10.1086/155664
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发表时间：
1977
期刊：
影响因子：
--
通讯作者：
D. York
中科院分区：
文献类型：
--
作者：
W. Smith;T. Snow;D. York
近年来，关于未知的弥漫星际带的大部分工作都集中在这样的假设上：它们是由固体颗粒中的某种过程产生的。我们回顾了该假设和支持该假设的论据，发现不应排除某些类别分子形成扩散带的可能性。由于过去四年中进行了多次相关观测，因此对各波段的观测数据进行了回顾。看来这些数据与条带的分子起源和谷物起源一样一致。描述了产生“扩散”带的分子跃迁类型。这些转变可以发生在由宇宙丰富的元素组成的相对简单的分子中，并且可以在不破坏分子的情况下产生广泛的、无法解析的轮廓。提出的新观察结果可以提供决定性的证据，以确定扩散带是否起源于谷物、分子或两者。
Most work in recent years on the unidentified diffuse interstellar bands has been concentrated on the hypothesis that they are produced by some process in solid grains. We review that hypothesis and the arguments which support it, and find that diffuse band formation by certain classes of molecules should not yet be ruled out. Since several relevant observations have been made in the last four years, the observational data on the bands are reviewed. It would appear that these data are as consistent with molecular origins for the bands as with grain origins. Types of molecular transitions which give rise to 'diffuse' bands are described. These transitions can occur in relatively simple molecules composed of cosmically abundant elements and can produce broad, unresolvable profiles without destroying the molecule. New observations are suggested which could produce decisive evidence with which to determine whether the diffuse bands originate in grains, molecules, or both.