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Thrusday, July 4 - Session 3 - 17:05 |
Nonlinearity of nonradial modes in evolved stars
R.M. Nowakowski, W.A. Dziembowski
Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland
Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland
We show that in evolved stars even at relatively low surface ampitude
nonradial modes become strongly nonlinear in the hydrogen shell source,
where the Brunt-Väisälä frequency has absolute maximum. The measure
of nonlinearity is the product of horizontal displacement and radial
wavenumber. The value of |
Last changed: 2002/Jun/04
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