STRUCTURAL-PROPERTIES OF PULSATING STAR LIGHT CURVES THROUGH FUZZY DIVISIVE HIERARCHICAL-CLUSTERING

The aim of this paper is to explore the possibility of using a fuzzy d ivisive clustering technique to the classification of pulsating stars according to the shape of their light curves. The considered sample co ntains Cepheides, RR Lyrae stars, and high amplitude delta Scuti and S X Phoenicis stars. Our investigations proved the ability of this metho d to identify morphological groups in a given class of pulsating stars . The method is also useful for establishing the membership of an unkn own variable star in a given class.