sM_dust as a function of M_*. In the left panel DustPedia and LVL galaxies are shown in blue and pink, respectively; in the right panel galaxies are colour-coded with morphology. Objects are divided between those with larger (open and paler circles) and smaller uncertainties (filled and darker circles; see text for details): the black error bars in the left panel show the median values of the uncertainties in both ranges. In the left panel, the dashed red curve is the smoothly joined bilinear fit for LTGs, the shaded area shows the dispersion around the fit, and the two paler dashed curves indicate the fitted intrinsic scatter. We also show the fits by Casasola et al. (2020) and De Looze et al. (2020), and mark galaxies hosting AGNs or s radio jet with a ‘x’ or a ‘+’ symbol, respectively (see Sect. 3). In the right panel, the coloured curve shows the combination of the fitted fifth-order polynomials, of each physical property, parametrised with Hubble stage (from T = −5 to T = 10; pink to dark-red; see Table B.1) on the sM_dust–M_* plane. The uncertainty of the polynomials is indicated by the shaded grey area.