Luminosity-weighted stellar [Z/H] radial profiles for the galaxies in our sample. Different colors indicate the radial profile measured across different environments, as indicated in the legend of the bottom-right panel. The black line shows the radial profile measured for the entire FoV (i.e., all environments together). The galactocentric distance is measured in units of R₂₅, in order to measure radial distance homogeneously across our sample. The value of R₂₅ (kpc) of each galaxy is indicated in each corresponding panel. The solid gray line shows the best-fit gradient for each galaxy.