Chaos in variable stars: Topological analysis of W Vir model pulsations.
The topological characterization of chaos is applied to the irregular pulsations of a model for a star of the W Virginis type, computed with a state-of-the-art numerical hydrodynamical code. The banded W Vir attractor is found to possess an additional twist when compared to the Rossler band. It is shown that the stellar light-curve contains the same dynamical information about the attractor as the stellar radius or as the radial velocity variations. (c) 1996 American Institute of Physics.
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LESP, URA CNRS 230, INSA de Rouen, BP 08, 76 130 Mont-Saint-Aignan, FranceDASGAL, Observatoire de Paris, Place Jules Jansen, 92190 Meudon, FrancePhysics Department, University of Florida, Gainesville, Florida 32611.
Gouesbet
G.
G
Soufi
F.
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Buchler
J. R.
JR
Kollath
Z.
Z