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Asteroseismology of β Cephei

Published online by Cambridge University Press:  08 February 2017

H. Shibahashi  and
C. Aerts
H. Shibahashi
Affiliation:
Department of Astronomy, University of Tokyo, Japan
C. Aerts
Affiliation:
Instituut voor Sterrenkunde, Katholieke Univ. Leuven, Belgium

Abstract

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We discuss the oscillation features of β Cephei, which is a magnetic star in which the magnetic axis seems to be oblique to the rotation axis. We interpret the observed equi-distant fine structure of the frequency spectrum as a manifestation of a magnetic effect on an eigenmode, which would be a radial mode in the absence of the magnetic field. Besides these frequency components, we interpret another peak in the frequency spectrum as an independent quadrupole mode. By this mode identification, we deduce the mass, the evolutionary stage, the rotational frequency, the magnetic field strength, and the geometrical configuration of β Cephei.

Type
VI. Asteroseismology II
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 395 - 396
Copyright
Copyright © Kluwer 1998 

References

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