The differences in the Narrow Line Region of nearby QSOs 1 and 2 -- I: higher excitation and contribution of shocks in type 1's

Gabriel R. Hauschild-Roier, Thaisa Storchi-Bergmann, Rogério Riffel +1

We compare the excitation of the Narrow-Line Region (NLR) of type 1 and type 2 QSOs for redshifts $0.4\le z\le 0.5$ via the analysis of their emission line properties in Sloan Di…