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Pulsation of magnetic stars

Published online by Cambridge University Press:  18 February 2014

Hideyuki Saio
Hideyuki Saio*
Affiliation:
Astronomical Institute, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Japan email: [email protected]
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Abstract

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Some Ap stars with strong magnetic fields pulsate in high-order p modes; they are called roAp (rapidly oscillating Ap) stars. The p-mode frequencies are modified by the magnetic fields. Although the large frequency separation is hardly affected, small separations are modified considerably. The magnetic field also affects the latitudinal amplitude distribution on the surface. We discuss the properties of axisymmetric p-mode oscillations in roAp stars.

Keywords

stars: magnetic fieldsstars: oscillations
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S301: Precision Asteroseismology , August 2013 , pp. 197 - 204
Copyright
Copyright © International Astronomical Union 2014 

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