Fig. A.1.
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BPT diagram of the H II regions in our sample. The blue circles show all the H II regions, while the orange circles mark the position of the H II regions associated to the CCSNe. The green circles show the SNe that are above the composite region (solid line) defined by Kauffmann et al. (2003). We also show the AGN ionization region as the dashed line, as defined by Kewley et al. (2001).
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