Fig. A.1
Multi-wavelength surface-brightness and U profiles for the face-on DustPedia sample, except for the galaxy NGC 5457 (M 101) already displayed in Fig. 2, shown up to r25. The profiles are shown as in Fig. 2. The black dashed lines are exponential fits performed avoiding the central part of galaxies up to the maximum extension of the 70 μm profile (or the 12 μm profile for NGC 6946 and the 100 μm profiles for NGC 1097 and NGC 300).
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