Mass-metallicity relation revisited with CALIFA

These unparalleled spatially resolved spectroscopic data allow us to determine the metallicity at the same physical scale (R_e_) for different calibrators. We obtain MZ relations with similar shapes for all calibrators, once the scalefactors among them are taken into account.

We do not find any significant secondary relation of the MZ relation with either the star formation rate (SFR) or the specific SFR for any of the calibrators used in this study, based on the analysis of the residuals of the best-fitted relation. However, we do see a hint for an (s)SFR-dependent deviation of the MZ relation at low masses (M<10^9.5^M_{sun}_), where our sample is not complete. We are thus unable to confirm the results by Mannucci et al. (2010), although we cannot exclude that this result is due to the differences in the analysed data sets.