Upper panel: distribution of CALIFA galaxies in the u − z vs. Mz color–magnitude diagram. Black dots denote galaxies in the CALIFA mother sample (S12, W14) and colored symbols indicate CALIFA DR2 galaxies. Different colors account for the morphological classification, which range from ellipticals (E) to late-type spirals; group “O” includes Sd, Sdm, Sm, and I types. Lower panel: fraction of galaxies in the DR2 sample with respect to the CALIFA MS distribution (939 objects) in bins of 1 mag in Mz and 0.75 mag in u − z. The total number of galaxies per bin in the DR2 sample and the MS are shown in the upper and lower part of each bin, respectively. Bins for which the number of galaxies in the MS is less than 5 are prone to low-number statistics and enclosed by an orange square for better identification.
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