Attempts to measure the magnetic field of the pulsating B star ν Eridani

被引：25

作者：

Schnerr, R. S.

Verdugo, E.

Henrichs, H. F.

Neiner, C.

机构：

[1] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[2] ESA, ESAC, Res & Sci Support Dept, Madrid, Spain

[3] Katholieke Univ Leuven, Inst Astron, B-3001 Louvain, Belgium

[4] Observ Paris, CNRS, GEPI, UMR 8111, F-92195 Meudon, France

来源：

ASTRONOMY & ASTROPHYSICS | 2006年 / 452卷 / 03期

关键词：

stars : magnetic fields; stars : early-type; stars : individual : nu Eri; stars : oscillations; stars : activity; line : profiles;

D O I：

10.1051/0004-6361:20054635

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on attempts to measure the magnetic field of the pulsating B star v Eridani with the Musicos spectropolarimeter attached to the 2m telescope at the Pic du Midi, France. This object is one of the most extensively studied stars for pulsation modes, and the existence of a magnetic field was suggested from the inequality of the frequency separations of a triplet in the stars' oscillation spectrum. We show that the inferred 5-10 kG field was not present during our observations, which cover about one year. We discuss the influence of the strong pulsations on the analysis of the magnetic field strength and set an upper limit to the effective longitudinal field strength and to the field strength for a dipolar configuration. We also find that the observed wind line variability is caused by the pulsations.

引用

页码：969 / 974

页数：6

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