Reddening and Age Determination for Large Magellanic Cloud Star Clusters from Integrated Spectroscopy

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

Congreso; XV Latin American Regional IAU Meeting; 2016

We present flux-calibrated integrated spectra in the optical range(3700-6800 Å) obtained at Complejo Astronómico El Leoncito(CASLEO, Argentina) for a sample of concentrated star clusters belongingto the Large Magellanic Cloud (LMC). Most of the observed clusters havebeen poorly studied up to now. We derive simultaneously foregroundE(B-V) reddening values and ages for the clusters by comparing theirintegrated spectra with template LMC cluster spectra and with differentsets of simple stellar population (SSP) models. For the studied clustersample, we derive ages between 1 Myr and 150 Myr, and metal abundancestypical of the more metalrich LMC clusters. We explore the potentialityof each method by comparing their results as well as the choice of thetemplates and SSPs used. In an effort to create a spectral library atthe LMC metallicity level with several clusters per age range, thecluster sample here presented stands out as a useful complement toprevious ones.