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
收藏
页码：705 / 715
页数：11
相关论文
共 74 条
[11]  
BABEL J, 1992, ASTRON ASTROPHYS, V258, P449
[12]   Abundance analysis of two late A-type stars HD 32115 and HD 37594 [J].
Bikmaev, IF ;
Ryabchikova, TA ;
Bruntt, H ;
Musaev, FA ;
Mashonkina, LI ;
Belyakova, EV ;
Shimansky, VV ;
Barklem, PS ;
Galazutdinov, G .
ASTRONOMY & ASTROPHYSICS, 2002, 389 (02) :537-546
[13]   Ab initio calculations of oscillator strengths and Lande factors for NdIII [J].
Bord, DJ .
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 2000, 144 (03) :517-522
[14]   Abundance analysis of targets for the COROT/MONS asteroseismology missions -: I.: Semi-automatic abundance analysis of the γ Dor star HD 49434 [J].
Bruntt, H ;
Catala, C ;
Garrido, R ;
Rodríguez, E ;
Stütz, C ;
Knoglinger, P ;
Mittermayer, P ;
Bouret, JC ;
Hua, T ;
Lignières, F ;
Charpinet, S ;
Van't Veer-Menneret, C ;
Ballereau, D .
ASTRONOMY & ASTROPHYSICS, 2002, 389 (01) :345-354
[15]  
Caliskan H, 1995, ASTR SOC P, V78, P443
[16]   Elemental abundance analyses with DAO spectrograms .17. The superficially normal early A stars 2 Lyncis, omega Ursa Majoris and phi Aquilae [J].
Caliskan, H ;
Adelman, SJ .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1997, 288 (02) :501-511
[17]   Multiplicity among chemically peculiar stars - II. Cool magnetic Ap stars [J].
Carrier, F ;
North, P ;
Udry, S ;
Babel, J .
ASTRONOMY & ASTROPHYSICS, 2002, 394 (01) :151-169
[18]   Abundances in Przybylski's star [J].
Cowley, CR ;
Ryabchikova, T ;
Kupka, F ;
Bord, DJ ;
Mathys, G ;
Bidelman, WP .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2000, 317 (02) :299-309
[19]  
Gelbmann M, 1997, ASTRON ASTROPHYS, V319, P630
[20]  
Gelbmann M, 2000, ASTRON ASTROPHYS, V356, P200
12345678