Amplitude Saturation in Beta Cephei Models - Preliminary Results

Details Amplitude Saturation in Beta Cephei Models - Preliminary Results Amplitude Saturation in Beta Cephei Models - Preliminary Results

2006-12-18

arxiv.org/abs/astro-ph/0612489v1

Commun.Asteros.150:205,2007

Astronomy and Astrophysics

Astrophysics

3 pages, 1 figure, to appear in the proceedings of the "Vienna Workshop on the Future of Asteroseismology", 20-22 September 20

Scientific paper

10.1553/cia150s205

Using nonlinear hydrocodes we have calculated single mode saturation amplitudes for beta Cephei models. Predicted saturation amplitudes are systematically higher than amplitudes observed in beta Cephei variables, even in monoperiodic ones. We argue that collective saturation of the pulsation instability by a dozen or so acoustic modes brings the theoretical amplitudes to the observed level.

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