Evolution of the chemical enrichment and the mass–metallicity relation in CALIFA galaxies
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Oxford University Press
Galaxy: abundancesGalaxies: evolutionGalaxy: fundamental parameters
A Camps-Fariña... [et al.]. Evolution of the chemical enrichment and the mass–metallicity relation in CALIFA galaxies, Monthly Notices of the Royal Astronomical Society, Volume 504, Issue 3, July 2021, Pages 3478–3493, [https://doi.org/10.1093/mnras/stab1018]
SponsorshipConsejo Nacional de Ciencia y Tecnologia (CONACyT) CB-285080 FC-2016-01-1916; Universidad Nacional Autonoma de Mexico PAPIIT-DGAPA-IN100519; European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant 839090; Spanish grant within the European Funds for Regional Development (FEDER) PGC2018-095317-B-C21
We apply fossil record techniques to the CALIFA sample to study how galaxies in the Local Universe have evolved in terms of their chemical content.We show how the stellar metallicity and the mass–metallicity relation (MZR) evolve through time for the galaxies in our sample and how this evolution varies when we divide them based on their mass, morphology, and star-forming status. We also check the impact of measuring the metallicity at the centre or the outskirts. We find the expected results that the most massive galaxies were enriched more quickly, and that theMZR was steeper at higher redshifts. However, once we separate the galaxies into morphology bins this behaviour is less clear, which suggests that morphology is a primary factor in determining how quickly a galaxy becomes enriched, but with mass determining the final enrichment.We also find that star-forming galaxies (SFGs) appear to be asymptotic in their chemical evolution; that is, the metallicity of SFGs of any mass is very similar at recent times unlike several Gyr ago.