FUNDAMENTAL PROPERTIES OF BLUE COMPACT AND HIGH SURFACE BRIGHTNESS STAR CLUSTERS IN THE LARGE MAGELLANIC CLOUD

TALAVERA, M. L.; AHUMADA, A.V.; CLARIÁ, J. J.; SANTOS, J.F.C. JR.; BICA, E.; PARISI, M.C.

Isla Margarita - Venezuela

Congreso; XII IAU Regional Latin American Meeting of Astronomy; 2007

Foreground reddening values and ages are determined from integrated spectra for a sample of 29 blue, compact and high surface brightness Large Magellanic Cloud (LMC) clusters. Cluster reddening values were estimated by using both the template matching method and interstellar extinction maps, while cluster ages were derived from template matching and equivalent width (EWs) methods, respectively. In the this case, empirical age/metallicity calibrations were used together with diagnostic diagrams involving the sum of EWs of selected spectral lines. The derived cluster ages range from ~ 5 to 800 Myr. In general, a good agreement is found between the results obtained from the two methods. The present cluster sample complements previous ones in an attempt to provide a spectral library for the LMC with several clusters per age interval.