Abstract
Surface brightness fluctuations (SBF) measurements are a powerful and now very well established tool for determining cosmological distances. In addition, they can provide unique information about the brightest stars in a population. In a series of papers, González-Lópezlira et al. have advanced in the calibration of model SBF luminosities for the study of unresolved stellar populations, through a comparison with data of Magellanic star clusters. Here, we propose to study the relation between absolute I-band fluctuation magnitude and (V-I) color in Magallanic stellar clusters, using data from the Deep Near-Infrared Southern Sky Survey (DENIS), and from the literature. We also compare our results with data of early-type galaxies and spiral bulges obtained by Tonry et al.
