Nuclear activity is a fundamental ingredient in the formation history of a galaxy. This is
documented by the presence of inactive supermassive black holes (SBH) in the center of virtually all massive spheroids. Moreover
many similarities between the global properties of active and non active galaxies indicate a common origin
for both types of galaxies.
The characterization of the regions in the sphere of influence of the SBH is then used to study the interplay
and evolution between BH mass and the properties of their host galaxies.
Studies carried out at OAPd are aimed at deriving properties of galaxies that host powerful
nuclear activity at high redshift, using high quality VLT and HST images. This allows to trace the evolution of
active galaxies, as compare it with inactive massive spheroids and link it with the co-evolution of BH mass through virial
We also investigate the phenomenology of active galactic nuclei
in a multi dimensional parameter space (similar to the H-R diagram for stellar population) that includes the
properties of broad lines and the continuum emission. This analysis yields fundamental insights into the structure, physical
condition and dynamics of the broad line emitting region (BLR) of AGN.
At low redshift, we study radio galaxy in detail, with imaging and spectroscopy, to investigate how the
(global and core) fundamental plane of RG compare with that of normal early type galaxies.