Amplitude Limitation in Multi-Periodic Pulsating White Dwarfs

Details Amplitude Limitation in Multi-Periodic Pulsating White Dwarfs Amplitude Limitation in Multi-Periodic Pulsating White Dwarfs

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..393..239m&link_type=abstract

New Horizons in Astronomy: Frank N. Bash Symposium 2007 ASP Conference Series, Vol. 393, proceedings of the conference held 14-1

Astronomy and Astrophysics

Astronomy

1

Scientific paper

While previous investigations have focused on the effect of resonant mode coupling, we explore the consequences of a simple model of linear driving and non-linear, non-resonant damping of modes in pulsating white dwarfs. For an assumed spectrum of modes, we find that those with the largest growth rates have the largest final amplitudes, and that smaller growth rate modes can become damped and have final amplitudes of zero. This general trend mimics what is observed in these stars.

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