CLARIÁ OLMEDO JUAN JOSÉ
Congresos y reuniones científicas
Título:
Integrated spectroscopy of compact star clusters of the Large Magellanic Cloud
Lugar:
Santiago de Chile
Reunión:
Workshop; ESO Meeting on star formation and evolution of star clusters; 2014
Institución organizadora:
European Souterhn Observatory
Resumen:
We present flux-calibrated integrated spectra inthe optical range (3700-6800 Å)obtained with the 2.15 m telescope at Complejo Astronómico El Leoncito (CASLEO,Argentina) for a sample of 35 concentrated star clusters (SCs) of the LargeMagellanic Cloud (LMC). Using the available template spectral libraries and thealgorithm "Fast Integrated Spectra Analyzer" (FISA), accurate foregroundreddening values and ages are simultaneously estimated. Equivalent widths (EWs) of the Balmer lines and diagnostic diagrams involving the sum of EWs ofselected spectral lines are also employed as age indicators. The derived E(B-V)values for the whole cluster sample vary from 0.0 to 0.30 magnitudes, while theages range from 3 Myr (NGC 1920) to 10 Gyr (NGC 1466). We find that the younger clusters were formed closerto the LMC bar than the older ones. Three new integrated template spectracorresponding to 30 Myr, 400 Myr and 2 Gyr, respectively, were defined. Thisimplies a refinement of the existing spectral libraries and an improvement oftheir temporal resolution.
