Further developments in star cluster spectral libraries

AHUMADA, A.V.; CLARIA OLMEDO, JUAN JOSÉ; BICA, EDUARDO; PIATTI, ANDRÉS E.; DUTRA, C; PARISI, M.C.; PALMA, T.; PAVANI, D.; SANTOS JR, JOÂO F.C.; TALAVERA, M.C.; TORRES,M.C.

Proc. IAU Symp. "Star Clusters - Basic Galactic Building Blocks throughout Time and Space"

Cambridge Univ Press

Año: 2010 vol. 266 p. 347 - 350

1743–9213

Abstract. We present flux-calibrated integrated spectra in the optical spectral range of Galacticopen clusters (GOCs) and Magellanic Clouds (MCs) stellar clusters (SCs) obtained at CASLEO(Argentina). The SC parameters were derived from the equivalent width (EW) method and fromthe template matching procedure by comparing the line strengths and continuum distribution ofthe cluster spectra with those of template spectra with known parameters. MCs cluster reddeningvalues were also estimated by interpolation between the available extinction maps. The derivedages for the GOCs range from 3 Myr to 4 Gyr, while those of the MCs SCs vary from 3 Myr to7 Gyr. E(B-V) colour excess values in the MCs appear to be all lower than 0.17, while those ofthe GOCs range from 0.00 to 2.40. The present data led us to upgrade the spectral libraries ofreference spectra or templates of solar-metallicity and MCs metallicities.