Resolved S-BPT ([OIII]/Hβ vs. [SII]λ6716,6731/Hα) (top) and N-BPT ([OIII]/Hβ vs. [NII]λ6584/Hα) diagrams (bottom) of J1000+1242 for each spaxel with S/N >  3 in each line. The solid curves define the theoretical upper bound for the HII regions (Kewley et al. 2001). The dashed line in S-BPT represents the Kewley et al. (2006) demarcation between Seyfert galaxies and shocks or LINERs. The dashed curve in N-BPT represents the empirical classification by Kauffmann et al. (2003) to divide pure star-forming from Seyfert–H II composite objects. The black contours represent the moment 0 of Hα. The data points on the BPT diagram are colored differently to distinguish different regions. The intensity of the color is proportional to the moment 2 of [OIII].