Abstract

We present the second part of the review of spectroscopic observations of Mira variables in the optical and near infrared. The role of various structures (atmosphere, envelopes) in the formation of the optical spectrum is estimated. The thickness of the molecular layer that creates the observed effects of distortion of the emission spectra is estimated based on two model approximations. Assuming that a significant part of the optical spectrum is formed in the circumstellar envelopes, the known photometric and spectroscopic effects are discussed.

中文翻译：

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米拉变量。分子光谱

摘要

我们介绍了米拉变量在光学和近红外光谱观测回顾的第二部分。估计各种结构（大气、包络线）在光谱形成中的作用。产生所观察到的发射光谱畸变效应的分子层的厚度是基于两个模型近似值来估计的。假设光谱的很大一部分是在恒星周围的包层中形成的，讨论了已知的光度和光谱效应。