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Pulsation of chemically peculiar stars

Published online by Cambridge University Press:  06 February 2024

Ernst Paunzen Open the ORCID record for Ernst Paunzen [Opens in a new window]
Ernst Paunzen*
Affiliation:
Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlářská 2, 611 37 Brno, Czechia
*
email: epaunzen@physics.muni.cz
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Abstract

This paper reviews our current knowledge about pulsating chemically peculiar (CP) stars. CP stars are slowly rotating upper main-sequence objects, efficiently employing diffusion in their atmospheres. They can be divided into magnetic and non-magnetic objects. Magnetic activity significantly influence their pulsational characteristics. Only a handful of magnetic, classical pulsating objects are now known. The only exceptions are about 70 rapidly oscillating Ap stars, which seem to be located within a very tight astrophysical parameter space. Still, many observational and theoretical efforts are needed to understand all important physical aspects and their interrelationships. The most important steps to reach these goals are reviewed.

Keywords

chemically peculiar starspulsating starsrotationmagnetic field
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S376: At the crossroads of astrophysics and cosmology: Period–luminosity relations in the 2020s , December 2022 , pp. 91 - 97
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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