Is there a dependence in metallicity evolution on galaxy structures?

We investigate the environmental dependence of the mass-metallicty (MZ) relation and its connection to galaxy stellar structures and morphologies. In our studies, we analyze galaxies in massive clusters at z ~ 0.4 from the CLASH (HST) and CLASH-VLT surveys and measure their gas metallicities, star-formation rates, stellar structures and morphologies. We establish the MZ relation for 90 cluster and 40 field galaxies finding a shift of ~ - 0.3 dex in comparison to the local trends seen in SDSS for the majority of galaxies with logM 1010 M ⊙) lie below the main sequence which corresponds to the higher mass objects that reach solar abundances in the MZ diagram