Example of a star-forming galaxy (top row) and a Seyfert galaxy (bottom row). From left to right, the panels in each galaxy show the spectra and its position in the WHAN and BPT diagrams (where the contours represent this work’s galaxy density in each diagram). The solid orange and black lines represent the Cid Fernandes et al. (2010) transposition of the Kauffmann et al. (2003a) and Kewley et al. (2001) SF-AGN distiction criteria, and the green solid line represents the transposition of the Kewley et al. (2006) made by Cid Fernandes et al. (2010). The dashed black line represents the distinction between retired galaxies and LINERs (Cid Fernandes et al. 2011).