Modeling of rapid variability in the spectral line profiles of Wolf-Rayet stars

被引：11
|
作者：
Kudryashova, NA [1 ]
Kholtygin, AF [1 ]
机构：
[1] St Petersburg State Univ, Inst Astron, Petrodvorets 198904, Russia
来源：
ASTRONOMY REPORTS | 2001年 / 45卷 / 04期
关键词：
D O I：
10.1134/1.1361320
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Profiles of variable emission lines in the spectra of Wolf-Rayet stars are calculated using a stochastic cloud model for the inhomogeneous atmospheres of early-type stars. The model assumes that most of the line flux is formed in cold, dense condensations (clouds) that move through a rarified inter-cloud medium whose density monotonically decreases outwards. The formation of clouds is taken to be stochastic. Wavelet analysis is used to estimate the parameters of cloud ensembles. The model can reproduce the general pattern of line-profile variability observed in the spectra of Wolf-Rayet stars. (C) 2001 MAIK "Nauka/Interperiodica".
引用
收藏
页码：287 / 293
页数：7
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