T_dust radial profiles as a function of the galaxy radius normalised by R₂₅ for some sample galaxies (IC 342, NGC 628, NGC 3031, NGC 2403). Median T_dust values are shown as blue points, with the shaded blue regions indicating the total uncertainties, computed as the quadrature sum of the 16th and 84th percentiles and the modelling uncertainties (see Sect. 3.1). The dashed black line represents the Sérsic profile fit (see Eq. 3 and Table 2). The sampled physical scale for each galaxy is quoted in its respective panel. The lower panels display the residuals relative to the Sérsic fit.