Properties of the HII Regions Derived Using Integral Field Spectroscopy
Figure 6
(a) Distribution of the oxygen abundances at the effective radii as a function of the integrated stellar masses for the CALIFA galaxies (193, circles). For comparison purposes, we show similar values for the galaxies observed in the CALIFA feasibility studies (31, squares) included in the HII regions catalog described in Sánchez et al. [14]. The size of the symbols is proportional to the integrated SFR. The solid line represents the best-fitting curve, as described in Sanchez et al. [35]. The colors represent the logarithm of the integrated SFR for each galaxy. (b) Distribution of the differential oxygen abundances with respect to the solid-line shown in (a) (i.e., the dependence on the stellar mass), as a function of the integrated SFR for the CALIFA galaxies (113, blue solid circles). The size of the symbols is proportional to the oxygen abundances shown in Figure 6. The histogram shows the same distribution of differential oxygen abundances. The solid line represents a Gaussian function with the same central value (0.01 dex) and standard deviation (0.07 dex) as the represented distribution, scaled to match the histogram.
