THEORETICAL HOT HORIZONTAL-BRANCH STARS

被引：0
作者：
CASTELLANI, M
CASTELLANI, V
PULONE, L
TORNAMBE, A
机构：
[1] UNIV PISA, DIPARTIMENTO FIS, I-56100 PISA, ITALY
[2] OSSERV ASTRON TRIESTE, I-34100 TRIESTE, ITALY
[3] IST ASTROFIS SPAZIALE, I-00044 FRASCATI, ITALY
来源：
ASTRONOMY & ASTROPHYSICS | 1994年 / 282卷 / 03期
关键词：
STARS; EVOLUTION; HORIZONTAL BRANCH; GALAXIES; STELLAR CONTENT;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Previous evolutionary computations of horizontal branch stars have been extended to the range of ''thin-envelope'', very hot stellar models, in order to make available a homogeneous set of models covering the whole range of theoretical horizontal branch temperatures. We present evolutionary tracks for selected models of various metallicities, intended to represent the theoretical counterpart of hot stars populating extremely blue horizontal branches as well as to provide an input for detailed population synthesis programs devoted to study the origin of the ultraviolet light in old stellar systems. The role of metallicity in governing the evolutionary approach to the asymptotic giant branch and the contribution of the models to the UV flux are both shortly discussed.
引用
收藏
页码：771 / 774
页数：4
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