New old star clusters in the Small Magellanic Cloud

M.C. PARISI; D. GEISLER; A. GROCHOLSKI; J.J. CLARIÁ; G. CARRARO; E. COSTA; A.E. PIATTI; A. SARAJEDINI; R. LEITON

San Juan

Congreso; 54º Reunión Anual de la Asociación Argentina de Astronomía; 2011

Asociación Argentina de Astronomía

Using Calciumlet spectroscopy and PSF photometry performed on data taken with the "Very Large Telescope" (Chile), we derived ages and metal- licities of 15 Small Magellanic Cloud (SMC) star clusters. Three of them were found to be very old clusters so that the determination of their funda- mental properties allows us to improve our current knowledge on the SMC chemical evolution during the earliest epochs. Based on our new data, we further discuss the age-metallicity relation. The procedures and results in- cluded in this article will be presented in a more extensive and detailed way in Parisi et al. (2011 - in preparation).