Statistical analysis of the light curve of R Scuti
Abstract
It is demonstrated that the light variations of the variable star R Scuti are a stationary stochastic process. Light oscillations with average durations of 71 and 143 days have been found; these oscillations are shown to be narrowband random noise, i.e., cycles. Peaks on the power spectrum corresponding to these cycles exceed the 99% confidence interval; these cycles are found to be independent. It is suggested that there is a cycle 348 days long in the light curve of R Scuti, and it is emphasized that the lightcurve observations of stars must be performed simultaneously by means of correlations functions and the power spectrum. The description of the variability of RV Tauri type stars is also considered.
 Publication:

Astronomicheskii Zhurnal
 Pub Date:
 April 1981
 Bibcode:
 1981AZh....58..369K
 Keywords:

 Light Curve;
 Statistical Analysis;
 Stellar Oscillations;
 Stochastic Processes;
 Variable Stars;
 Correlation;
 Power Spectra;
 Random Noise;
 Self Oscillation;
 Stellar Spectra;
 Astronomy