Fig. 15
Left column panels: [N II]/Hα as a functionof excitation parameter P for the spaxels in the MaNGA galaxy M-8439-12701 and for the H II regions in nearby galaxies. The blue points are spaxels with abundances 12 + log(O/H) ± 0.05 in M-8439-12701 (the value of 12 + log(O/H) is indicated in each panel). The red squares are the H II regions in nearby galaxies with abundances in the same interval. The squares represent the mean values of the [N II]/Hα in bins of 0.05 dex in P. The bars denote the mean values of the scatter of the [N II]/Hα in the bins. The solid line is for the same H II regions but both the R2 and N2 lines are increased by a factor of 1.3. Right column panels: same for theMaNGA galaxy M-8440-12703.
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