The CALIFA Survey: Exploring the Oxygen Abundance in the Local Universe

We present here a review of the latest results on the spatially-resolved analysis of the stellar populations and ionized gas of disk-dominated galaxies based on Calar Alto Legacy Integral Field Area (CALIFA) data. CALIFA is an ongoing integral field spectroscopy (IFS) survey of galaxies in the Local Universe (0.005 < z < 0.03) that has already obtained spectroscopic information up to \(\sim\)2.5 \(r_e\) with a spatial resolution better than \(\sim\)1 kpc for a total number of more than 600 galaxies of different morphological types, covering the color-magnitude diagram up to M\(_{\rm R}\)2 \(r_e\); and (iii) an inner drop at \(