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FAST VARIATIONS OF THE MEAN BRIGHTNESS AND OTHER LIGHT CURVE PARAMETERS OF THE CARBON MIRA-TYPE STAR S CEP

 

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Vladislova I. Marsakova

Department of Astronomy

Odessa State University

T. G. Shevchenko Park

Odessa, Ukraine 270014

 

Submitted December 31, 1998

 

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.

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