The spectroscopic signature of roAp stars

被引：114

作者：

Ryabchikova, T

Nesvacil, N

Weiss, WW

Kochukhov, O

Stütz, C

机构：

[1] Univ Vienna, Dept Astron, A-1180 Vienna, Austria

[2] Russian Acad Sci, Inst Astron, Moscow 109017, Russia

[3] European So Observ, Santiago 19, Chile

[4] Astron Observ, S-75120 Uppsala, Sweden

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 423卷 / 02期

关键词：

stars : abundances; stars : atmospheres; stars : chemically peculiar; stars : oscillations;

D O I：

10.1051/0004-6361:20041012

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

To reliably determine the spectroscopic signature of rapidly oscillating chemically peculiar (roAp) stars it is also necessary to investigate a sample of non pulsating chemically peculiar (noAp) as well as presumably "normal" stars. We describe in this study the sample of spectroscopically investigated stars and comment on the techniques used for the analysis. In particular we discuss ionization disequilibria of rare earths in roAp stars that distinguish them from noAp stars. In the light of the recently discovered pulsation of beta CrB we see arguments that all magnetic CP2 stars up to a transition temperature of about 8100 K may be pulsating.

引用

页码：705 / 715

页数：11

共 74 条

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