Influence of non-adiabatic temperature variations on line profile variations of slowly rotating β Cephei stars and SPBs -: II.: Simulations of line profile time series

被引:39
作者
De Ridder, J
Dupret, MA
Neuforge, C
Aerts, C
机构
[1] Katholieke Univ Leuven, Inst Sterrenkunde, B-3001 Heverlee, Belgium
[2] Univ Liege, Inst Astrophys & Geophys, B-4000 Cointe Ougree, Belgium
关键词
stars : early-type; stars : variables :beta Cep; stars : variables : slowly pulsating B stars; line : profiles;
D O I
10.1051/0004-6361:20020137
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate to what extent non-adiabatic temperature variations at the surface of slowly rotating non-radially pulsating beta Cephei stars and slowly pulsating B stars affect silicon line profile variations. We use the non-adiabatic amplitudes of the effective temperature and gravity variation presented in Dupret et al. (2002), together with a Kurucz intensity grid, to compute time series of line profile variations. Our simulations point out that the line shapes do not change significantly due to temperature variations. We find equivalent width variations of at most two percent of the mean equivalent width. We confront our results with observational equivalent width variations and with photometrically obtained effective temperature variations.
引用
收藏
页码:572 / 584
页数:13
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