Fast Variations of the Mean Brightness and Other Light Curve Parameters of the Carbon Mira-Type Star S Cep

Volume 27 number 2 (1999)

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Vladislova Marsakova

Abstract

The variability of S Cephei was studied by using amateur observations from the AFOEV and VSOLJ databases. Fast variations of mean brightness and minimum magnitude with a cycle of 1500 days has been found. Correlation analysis of the individual cycle characteristics has been performed. The hump in the ascending branch and its influence on the light curve are analyzed. The relations between the individual cycle characteristics are discussed.