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Excitation and damping of solar and stellar oscillations

Published online by Cambridge University Press:  03 August 2017

S.M. Chitre
S.M. Chitre*
Affiliation:
Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay - 400005, India

Abstract

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Variable stars can be broadly classified into two categories: (a) High amplitude pulsators like Cepheids and RR Lyrae variables, (b) Low amplitude pulsators like Sun and Sun-like stars. The study of stellar pulsations has opened the possibility of using the oscillatory modes to probe the internal structure and dynamics of these stars. The cause of pulsational instability for a majority of stars is the partial ionisation of the abundant elements present in the envelope of the stars, while some instabilities are driven by the transfer of momentum from the medium to the oscillating elements. Various mechanisms responsible for exciting and limiting the solar and stellar oscillations are discussed.

Type
Chapter 6: Excitation and Damping of Solar and Stellar Oscillations
Information
Symposium - International Astronomical Union , Volume 123: Advances In Hello- and Asteroseismology , 1988 , pp. 345 - 357
Copyright
Copyright © Reidel 1988 

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