Left: 10″ × 10″ cutouts of the HST F125W (z < 1.5) or F160W (z > 1.5) and MIRI F1800W images (upper panels), and of the GALFIT model and residual images (lower panels), for three galaxies in our MIRI×CANDELS sample (COSMOS field). Right: Best SED fitting of these galaxies as obtained by CIGALE (Boquien et al. 2019). Blue and red curves are stellar and dust emission; orange curves indicate the emission coming from the AGN component. From top to bottom, the AGN fraction is decreasing, from 70%, to 10%, and then 0%. For galaxies dominated by AGNs, typical PAH features between 3 to 20 μm are hidden by the AGN continuum.