PERIODIC PHENOMENA IN AE BE HERBIG STARS LIGHT CURVES .1. LIGHT CURVES CLASSIFICATION AND DIGITAL ANALYSIS-METHODS/

Light curves of 78 Herbig Ae/Be stars were studied by digital analysis methods. Twenty-five thousand photoelectric UBVR observations of thes e stars were made by the authors in 1978-1990. A star was usually obse rved once a night. The stars were observed between 70 and 770 nights a nd on average each star was observed at more than 300 nights. The mean epoch for a star is 5 years. A morphologic classification of the ligh t curves is suggested. The method of digital analysis are briefly desc ribed. To estimate the reliability of cyclic phenomena discovered in o ur study, a large number of them has been examined.