Fig. 4.
Distribution of the best-fit values of 12 + log(O/H) for all MaNGA spaxels considered in this work. Metallicities are derived by IZI with a Gaussian (red) and a flat (blue) prior on the ionisation parameter, respectively. Specifically, the mean of the Gaussian prior is given by the Diaz et al. (1991) calibration that links the [S III]/[S II] line ratio and ionisation parameter.
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