Fraction of Lum[OIII] > 10^6.4 L_⊙ as a function of stellar mass, (M_u − M_r) color, and D_n(4000) parameter (left, middle and right panels, respectively), for barred AGN galaxies (solid lines), AGN in pair systems (dashed lines), and unbarred AGN in the control sample (dotted lines). Each bin for each sample contains a similar number of galaxies. The number average of galaxies in each bin is ≈105 for barred-agn ≈310 for agn in pairs and ≈140 for CS. The small boxes correspond to the fraction of Lum[OIII] > 10^6.65 L_⊙ as a function of the same parameters.