Integral Field Spectroscopy observations of 3C 120, spectrum of the optical counter-part of the radio-jet and evidences of a past merging

We report on IFS observations of the nuclear regions of 3C 120, using INTEGRAL at the 4.2m WHT telescope. We propose new methods to deblend the spectra of the nucleus and the host galaxy based in 2D decompositions, and to extract the spectra of the substructures in complex systems. Using this method we obtained (a) the clean spectrum of the optical counter-part of the radio-jet of 3C 120, determining its nature (highly-ionized gas), (b) the clean spectrum of the host galaxy, composed by a mix of two different stellar populations, and (c) the kinematics of the high- and low-ionized gas. We find evidences of a past merging event in this galaxy, which could be the origin of the nuclear activity.