METALLICITY EFFECTS IN MASSIVE STAR EVOLUTION AND NUMBER FREQUENCIES OF WR STARS IN GALAXIES

被引：0
|
作者：
MAEDER, A
MOFFAT, AFJ
LORTET, MC
MASSEY, PL
SREENIVASAN, SR
WALBORN, NR
VANBEVERN, D
HUMPHREYS, RM
机构：
[1] UNIV MINNESOTA, DEPT ASTRON, MINNEAPOLIS, MN 55455 USA
[2] OBSERV PARIS, SECT MEUDON, DAEC, F-92190 MEUDON, FRANCE
[3] KITT PEAK NATL OBSERV, TUCSON, AZ 85726 USA
[4] UNIV MONTREAL, DEPT PHYS, MONTREAL H3C 3J7, QUEBEC, CANADA
[5] UNIV CALGARY, DEPT PHYS & ASTRON, CALGARY T2N 1N4, ALBERTA, CANADA
[6] VRIJE UNIV BRUSSELS, INST FYS, B-1050 BRUSSELS, BELGIUM
[7] SPACE TELESCOPE SCI INST, BALTIMORE, MD 21218 USA
来源：
IAU SYMPOSIA | 1991年 / 143期
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The results of new grids of models of massive stars with metallicities Z = 0.002, 0.005, 0.020 and 0.040 and mass loss rates depending on Z are shown. When integrated over the mass spectrum, the models enable us to predict number ratios, such as WR/O, WC/WN, WNE/WR, WNL/WR, WCE/WR, WCL/WR, WO/WR as a function of Z in galaxies. Comparisons between models and observations in galaxies are made and show, as was suggested by Maeder, Lequeux and Azzopardi (1980), that the effects of metallicity on the mass loss rates are the prime agent responsible for the different distributions of massive stars in galaxies.
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页码：445 / 451
页数：7
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