41 citations · 100 across the 5 of their papers we have counts for
5 papers
Evidence for Low-Dimensional Chaos in Semiregular Variable Stars
J. Robert Buchler, Zoltan Kollath, Robert R. Cadmus
An analysis of the photometric observations of the light curves of the five large amplitude, irregularly pulsating stars R UMi, RS Cyg, V CVn, UX Dra and SX Her is presented. First…
Mode Switching Time Scales in the Classical Variable Stars
J. Robert Buchler, Zoltan Kollath
Near the edges of the instability strip the rate of stellar evolution is larger than the growth-rate of the pulsation amplitude, and the same holds whenever the star is engaged in…
Double-Mode Stellar Pulsations
Zoltan Kollath, J. Robert Buchler
The status of the hydrodynamical modelling of nonlinear multi-mode stellar pulsations is discussed. The hydrodynamical modelling of steady double-mode (DM) pulsations has been a lo…
Nonlinear Analysis of Irregular Variables
J. Robert Buchler, Zoltan Kollath
The Fourier spectral techniques that are common in Astronomy for analyzing periodic or multi-periodic light-curves lose their usefulness when they are applied to unsteady light-cur…
Analysis of the Irregular Pulsations of AC Her
Z. Kollath, J. R. Buchler, T. Serre +1
The AAVSO lightcurve data of the irregularly pulsating star AC Herculis of the RV Tau class are analysed. The lightcurve is shown to be incompatible with a periodic, or even multip…