Top-left panel: galfit 2D model computed using two Sersic laws for bulge and bar, and a double exponential law for the disk. Bottom-left panel: residual image derived by subtracting the 2D model from the galaxy image, in a logarithmic scale. Right panels: differences between the observed and fitted light profiles along the disk major axis (bottom panel) and along the bar major axis (top panel). Δμ < 0 where the galaxy is brighter than the model.