Diagrams comparing v_IS,comb, v_IS,Si IV and v_IS,Al III to the equivalent radius , the concentration parameter C_T, and the SFR surface density Σ_SFR, respectively, from top to bottom row. The derivation of the plots in each single row and the symbols are the same as explained in Fig. 11. The scatter plots presented in this figure are limited to galaxies with an available HST F814W image.