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Paper: Mode selection and other nonlinear phenomena in stellar oscillations
Volume: 40, Inside the Stars, IAU Colloquium 137
Page: 521
Authors: Dziembowski, W. A.
Abstract: Nonlinear effects determining the amplitudes of unstable modes of oscillations in stellar modes are reviewed. The two basic processes - saturation of the driving mechanism and resonant mode coupling - are discussed within the framework of the amplitude equation formalism. There are difficult problems in the theory of multiple mode interaction that must be solved to make a prediction of amplitude spectra possible. The observed spectra for Delta Scu stars and other multiperiodic variables exhibit no simple pattern that would suggest a solution of the theoretical problems.
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