He I lambda 4922 profiles in B stars - Calculations with an improved line broadening theory
He I lambda 4922 profiles in B stars - Calculations with an improved line broadening theory
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DOI：
10.1086/152878
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发表时间：
1974-06
期刊：
影响因子：
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通讯作者：
D. Mihalas;A. J. Barnard;J. Cooper;Earl W. Smith
中科院分区：
文献类型：
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作者：
D. Mihalas;A. J. Barnard;J. Cooper;Earl W. Smith
利用改进的Barnard，Cooper和Smith的加宽理论，以及由Auer和Mihalas的耦合转移方程和统计平衡方程的自洽解所确定的能级布居，计算了He I A4471谱线在B星光谱中的理论轮廓。建立展宽理论是为了更准确地描述在实验室实验中测量到的禁忌(2p3P0-4f3Fo)跃迁的强度和宽度。本文给出的结果表明，这次对展宽理论的修订导致了ComDuted恒星轮廓与观测轮廓的更好的符合，而不是以前获得的：主题标题：早期类型的恒星-线型轮廓
Theoretical profiles for the He I A4471 line in B-star spectra have been computed using an improved broadening theory of Barnard, Cooper, and Smith, together with level populations determined by a self-consistent solution by Auer and Mihalas of the coupled transfer and statistical-equilibrium equations. The broadening theory has been constructed to provide a more accurate description of the intensity and width of the forbidden (2p 3P0-4f 3Fo) transition as measured in laboratory experiments. The results presented in this paper show that this revision of the broadening theory leads to ComDuted stellar profiles which are in much better agreement with observed profiles than a& previously obtained: Subject headings: early-type stars - line profiles