Ages and metallicities of Large MagellanicCloud star clusters from integratedspectroscopy

AHUMADA, A., VEGA, L.

Córdoba

Encuentro; 9° FoF - Friends of Friends; 2019

Flux-calibrated integrated spectra in the optical range have been obtained for a sample of 16 blue compactand high surface brightness Large Magellanic Cloud (LMC) star clusters (SCs). We simultaneouslyderive foreground reddening values and ages for the SCs by comparing the line strengths and continuumdistribution of their integrated spectra with those of LMC cluster spectra templates. Through evolutionarysynthesis models for simple stellar populations and using a full-spectrum fitting code, we also derivereddenings, ages, and metallicities for the SC sample. No metallicity determinations have been previouslyperformed for nine out of the 16 clusters here studied. We find good agreement between the SC agesderived from the template-matching method and those ages estimated from theoretical evolutionarysynthesis models. We compare our results with those reported in the literature, and discuss the distributionof metallicity values.