Abstract
This is a second study in an ongoing work aimed to analyze the star formation activity and its relation with the Polycyclic Aromatic Hydrocarbon (PAHs) emission. In this way, we have performed a study about the correlation between the flux of the 7.7 μm PAH band and its equivalent width, with the luminosities and fluxes observed in JHK photometric bands, IRAS 12, 25, 60 and 100 μm, the radio emission at 1.4GHz and X-ray at 2-10 keV, for a sample composed of Seyfert 1-2, QSOs, Quasars, Starburst, and ULIRGs. The results found let us discriminate between objects with more star formation activity from others with more AGN influence.