M₂₀–Gini relation for the CALIFA galaxies. Each panel shows the scatter plot of the M₂₀–Gini relation for the stellar continuum and three different spectral features. The solid and dashed black lines are defined in Lotz et al. (2008a). The solid black line roughly separates galaxies between isolated and mergers, whereas the dashed black line divides galaxies into early and late types. Each point represents a galaxy, colour-coded according to their morphological group. AGNs are marked with a golden star. All galaxies with an inclination greater than 80° are marked with a horizontal bar, while all mergers are indicated with a triangle. The average uncertainties of each galaxy group are shown in the top-right corner of each panel.