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Mode selection in pulsating stars

Published online by Cambridge University Press:  18 February 2014

Radosław Smolec
Radosław Smolec*
Affiliation:
Nicolaus Copernicus Astronomical Centre, ul. Bartycka 18, 00-716 Warszawa, Poland email: [email protected]
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Abstract

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In this review we focus on non-linear phenomena in pulsating stars: mode selection and amplitude limitation. Of many linearly excited modes, only a fraction is detected in pulsating stars. Which of them are excited, and why (the problem of mode selection), and to what amplitude (the problem of amplitude limitation) are intrinsically non-linear and still unsolved problems. Tools for studying these problems are briefly discussed and our understanding of mode selection and amplitude limitation in selected groups of self-excited pulsators is presented. We focus on classical pulsators (Cepheids and RR Lyrae stars) and main-sequence variables (δ Scuti and β Cephei stars). Directions of future studies are briefly discussed.

Keywords

stars: oscillationsCepheidsδ Scuti starswhite dwarfs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S301: Precision Asteroseismology , August 2013 , pp. 265 - 272
Copyright
Copyright © International Astronomical Union 2014 

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