I briefly introduce a database of models that describe the evolution of star
clusters in several broad-band photometric systems. Models are based on the
latest Padova stellar evolutionary tracks - now including the alpha-enhanced
case and improved AGB models - and a revised library of synthetic spectra from
model atmospheres. As of today, we have revised isochrones in
Johnson-Cousins-Glass, HST/WFPC2, HST/NICMOS, Thuan-Gunn, and Washington
systems. Several other filter sets are included in a preliminary way, like
those used by the EIS and SDSS projects. The database contains also integrated
magnitudes of single-burst stellar populations and Monte-Carlo simulations that
show the stochastic dispersion of the colours as a function of cluster mass,
age, and metallicity. The models are useful for several kinds of studies,
including estimates of masses and ages of extragalactic star clusters observed
by means of broad-band photometry.Comment: 5 pages, to appear in Extragalactic Star Clusters, IAU Symp 207, eds.
E.K. Grebel, D. Geisler, D. Minniti. The isochrone data is in
http://pleiadi.pd.astro.it/~lgirardi/isoc_photsys.htm
