  The new World Wide Web site "GOLDMine" (Galaxy On Line Database Milano
Network) (http://goldmine.mib.infn.it) contains a multiwavelength data-base of
an optically selected sample of 3267 galaxies in the Virgo cluster and in the
Coma Supercluster. It is designed for professional astronomers who wish to find
data and images for these galaxies.
  Data, gathered in 15 years of observational campaigns by the authors or taken
from the literature include general parameters (catalogue names, celestial
coordinates, morphological type, recessional velocity etc.); multiwavelength
continuum photometry (total UV, U, B, V, J, H, K, FIR and radio magnitudes/flux
densities); line photometry (HI, H_2, H_alpha); dynamical parameters
(rotational velocity from the HI and H_alpha lines, velocity dispersion) and
structural parameters (light concentration index, effective radius and
brightness, asymptotic magnitude) in the optical (B and V) and Near Infrared (H
or K) bands. Images include finding charts, optical (B and V), H_alpha, Near
Infrared (H and/or K) and true color RGB frames (when available). Radial light
profiles obtained from the B, V, H or K band images are also available.
Integrated optical spectra along with broad Spectral Energy Distributions (SED)
from the UV to the radio domain are given. All images can be obtained in JPG
format, but the original (reduced) FITS images can be downloaded as well. The
database will be updated regularly and will be extended to other local clusters
and superclusters. Astronomers who wish to have their images included in
GOLDMine are strongly encouraged to send us their material.
