Integrated spectral evolution of galactic open clusters: new template spectra for studies of composite stellar populations

Abstract

Using integrated spectra obtained at CASLEO (Argentina) in the 3600-6800Å range, we determine E(B - V) colour excesses and ages for 61 open clusters of the Milky Way. We compare the derived properties of the whole sample with those of open clusters located nearly in the same sectors. Two new solar-metallicity templates are defined.