THEORETICAL CONTINUUM ENERGY-DISTRIBUTIONS FOR WOLF-RAYET STARS

被引:161
作者
SCHMUTZ, W
LEITHERER, C
GRUENWALD, R
机构
[1] SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218
[2] USP,INST ASTRON & GEOFIS,SAO PAULO,BRAZIL
关键词
D O I
10.1086/133104
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We discuss the problem of assigning an effective temperature to models of stellar evolution in the Wolf-Rayet stage. We conclude that it is best to use models with different velocity laws depending on the stellar temperature. We follow the simplest approach and propose to use a standard law with beta = 1 for the cooler and beta = 2 for the hotter Wolf-Rayet stars. We present energy distributions from non-LTE model calculations with a beta = 2 velocity law. The new calculations, together with published results based on beta = 1, allow one to synthesize realistic spectra of starburst regions. The flux tables are available in di ital form from the authors.
引用
收藏
页码:1164 / 1172
页数:9
相关论文
共 38 条
[11]  
HAMANN WR, 1987, ASTRON ASTROPHYS, V160, P347
[12]  
HAMANN WR, 1991, IAU S, V143, P81
[13]  
Hillier D.J., 1991, IAU S 143 WOLF RAYET, V143, P59
[14]   WC STARS - HOT STARS WITH COLD WINDS [J].
HILLIER, DJ .
ASTROPHYSICAL JOURNAL, 1989, 347 (01) :392-408
[15]   THE FORMATION OF NITROGEN AND CARBON EMISSION-LINES IN HD-50896 (WN5) [J].
HILLIER, DJ .
ASTROPHYSICAL JOURNAL, 1988, 327 (02) :822-839
[16]  
HOWARTH ID, 1992, ASTRON ASTROPHYS, V261, P503
[17]   THE STELLAR WINDS OF 203 GALACTIC-O STARS - A QUANTITATIVE ULTRAVIOLET SURVEY [J].
HOWARTH, ID ;
PRINJA, RK .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1989, 69 (03) :527-592
[18]  
KOESTERKE L, 1991, ASTRON ASTROPHYS, V248, P166
[19]   MODEL ATMOSPHERES FOR G-STAR, F-STAR, A-STAR, B-STAR AND O-STAR [J].
KURUCZ, RL .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1979, 40 (01) :1-340
[20]   H-ALPHA AS A TRACER OF MASS-LOSS FROM OB-STARS [J].
LEITHERER, C .
ASTROPHYSICAL JOURNAL, 1988, 326 (01) :356-367