  The central regions of galaxies show the presence of super massive black
holes and/or very dense stellar clusters. Both such objects seem to follow
similar host-galaxy correlations, suggesting that they are members of the same
family of Compact Massive Objects. Here we investigate a huge data collection
of Compact Massive Objects properties to correlate them with absolute
magnitude, velocity dispersion and mass of their host galaxies. We draw also
some preliminary astrophysical conclusions.
