New magnetic field measurements of β Cephei stars and slowly pulsating B stars

被引:0
|
作者
Hubrig, Swetlana [1 ]
Briquet, M. [2 ]
De Cat, P. [3 ]
Schoeller, M. [4 ]
Morel, T. [5 ]
Ilyin, I. [6 ]
机构
[1] ESO, Santiago, Chile
[2] Katholieke Univ Leuven, Inst Sterrenkunde, B-3001 Louvain, Belgium
[3] Koninklijke Sterrenwacht Belgie, B-1180 Brussels, Belgium
[4] European So Observ, D-85748 Garching, Germany
[5] Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium
[6] Astrophys Inst Potsdam, D-14482 Potsdam, Germany
关键词
Stars: variables: beta Cephei; stars: variables: SPBs; stars: oscillations; stars: Hertzsprung-Russell diagram; stars: magnetic fields; techniques:; polarimetric; stars: xi(1) CMa;
D O I
10.1017/S1743921309030804
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present the results of the continuation of our magnetic survey with FORS1 at the VLT of a sample of B-type stars consisting of confirmed or candidate beta Cephei stars and Slowly Pulsating B stars. Roughly one third of the studied beta Cephei stars have detected magnetic fields. The fraction of magnetic Slowly Pulsating B and candidate Slowly Pulsating B stars is found to be higher, tip to 50%. We find that the domains of magnetic and non-magnetic pulsating stars, in the H-R diagram largely overlap, and no clear picture emerges as to the possible evolution of the magnetic field across the main sequence.
引用
收藏
页码:389 / +
页数:2
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