BPT diagrams depicting [N II]/Hα, [S II]/Hα, and [O I]/Hα ratios. The observations from NGC 5728, and NGC 1320 are marked with stars, and a red diamond, respectively. The cyan squares, lime green diamonds, and magenta stars represent jet-affected (JR), intermediate jet-affected (IJR), and non-jet-affected (NJR) regions, respectively, and correspond to the shaded areas in Fig. 1. The Kewley and Schawinski lines are indicated with solid and dashed black lines, respectively, while the Koutsoumpou (SFζ) line, is depicted by the solid red line. In the background we show the line ratios measured for nearby galaxies from the Sloan Digital Sky Survey (SDSS) data release 7 (Abazajian et al. 2009).