EAS Publications Series
Volume 9, 2003Magnetism and Activity of the Sun and Stars
|Page(s)||265 - 265|
|Published online||17 November 2003|
J. Arnaud and N. Meunier (eds)
EAS Publications Series, 9 (2003) 265
Discovery of a magnetic field in the B2 IV star ζ Cassiopeia
Astronomical Institute "Anton Pannekoek",
University of Amsterdam, Kruislaan 403, 1098 SJ, Amsterdam, The Netherlands
We report on our discovery of a magnetic field in the B2IV star ζ Cas. We determine the rotation period from the UV wind behaviour. We summarize the results from spectropolarimetric observations of ζ Cas obtained in 2001 and 2002 with the MuSiCoS échelle spectropolarimeter at the 2 m Télescope Bernard Lyot (TBL). We also find a non-radial pulsation mode and confirm that the star is N-enriched. This is the third detection of a magnetic field in an early B-type variable star and the first one in a SPB star.
© EAS, EDP Sciences, 2003
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