SIMBAD references

2000MNRAS.313..179V - Mon. Not. R. Astron. Soc., 313, 179-184 (2000/March-3)

Non-linear behaviour of the pulsating white dwarf G29-38 - II. Analysis of the phase spectrum.

VUILLE F.

Abstract (from CDS):

An analysis of the phase spectrum of the DA pulsating white dwarf G29-38 over many seasons has been performed. This complements a companion paper which analyses the evolution of the temporal spectrum of G29-38.

We show that, with one exception, the relative phases of the harmonics and combination frequencies are all oscillating in phase with their parent modes. This not only suggests that these non-linear frequencies owe their presence to harmonic distortion and not to resonant mode coupling, but also explains the typical pulse shapes observed in the light curves of large-amplitude variable white dwarfs.

The one exceptional cross-frequency that does not show a phasing with its parent modes is thought to be a resonance.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): stars: individual: G29-38 - stars: oscillations - stars: variables: other - white dwarfs

Simbad objects: 1

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