Stellar population gradients across stellar-to-total dynamical mass relation. Galaxies are shown as circles color-coded by age gradient, ∇logAge, (upper panels), and metallicity gradient, ∇[M/H], (lower panels). Inner gradient (left panels), outer gradient (middle panels), and global gradient (right panels). Partial correlation coefficient strengths are shown in the bottom right corner (solid black or green lines) between the ∇logAge/∇[M/H] and M_★ (vertical) and M_tot (horizontal). Black (green) lines correspond to statistically (not) significant partial correlation coefficients. Solid gray lines have a length that corresponds to a correlation coefficient of 0.6 for reference. The direction of maximal increase of the stellar population parameters (see text) is indicated as a solid blue line when both partial correlation coefficients are significant, while a red line is used if at least one of the two is not significant.