Ajuste de espectros integrados de cúmulos estelares de la Nube Mayor de Magallanes mediante el código Starlight

MINNITI, J. H.; VEGA, L. R.; AHUMADA, A. V.; CLARIÁ, J. J.

Córdoba

Congreso; 57 Reunión Anual de la Asociación Argentina de Astronomía; 2014

The fit of synthetic spectra has proved to be a powerful tool fordetermining astrophysical parameters of stellar clusters (SCs). Suchmethodology is particularly useful to treat integrated spectra ofextragalactic SCs. In this work, we present the results obtained byapplying this technique to a sample of SCs belonging to the LargeMagellanic Cloud (LMC) observed from CASLEO, and using the starlightcode. The fitting of the data was performed by means ofevolutive--synthesis models of simple--stellar populations of differentages and metallicities, based on the MILESM stellar libraries. Theintegrated spectra of 34 SCs of the LMC were fitted in order to obtainthe age and metallicity of each object. This study also presents acomparison between the properties derived from those fittings and themethod of confrontation of our observations with spectral templates ofwell known ages.