title: Chaos in variable stars: Topological analysis of W Vir model pulsations.
abstract: 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.
authors.affiliation: 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.
authors.forename: C.
authors.initials: C
authors.lastname: Letellier
authors.forename: G.
authors.initials: G
authors.lastname: Gouesbet
authors.forename: F.
authors.initials: F
authors.lastname: Soufi
authors.forename: J. R.
authors.initials: JR
authors.lastname: Buchler
authors.forename: Z.
authors.initials: Z
authors.lastname: Kollath