Correlations with velocity dispersion of metallicity and all retrieved elements. Points are color-coded as in Figure 6, with darker red in the center and blue in the outskirts. Diamonds refer to NGC3309 and stars to NGC3311. Within 250 km s⁻¹, in the central regions, it can be easily seen that the different σ radial profiles of the two galaxies produce different trend of elements with σ, proving that local scaling relations are only explained by their σ profiles. At σ > 250 km s⁻¹, instead, elements in the halos are distributed in a different way, which is hard to connect to the inner regions, due to the increasing contribution of dark matter.