Statistical Study of the Blue Straggler Properties in Galactic Globular Clusters

Abstract

In this paper we report on the most significant results from a statistical analysis of the main properties of globular cluster blue straggler stars (BSS) extracted from the HST snapshot database of photometrically homogeneous CMDs (Piotto et al. 2002). The BSS relative frequency presents a significant anticorrelation with the collisional rate and with the cluster total absolute luminosity.Comment: 2 pages, 1 figure, A.S.P. Conf. Ser., in press in Vol. 296, 200