Images of the full budda models (top) and the corresponding residual images (bottom) after subtraction of the models from the IRAC image. From left to right: bulge+disc model, bulge+disc and exponential halo model, bulge+disc and Sérsic n > 2 halo model. The top images are in the same scale and display levels as in Fig. 1. The residual images are all in the same scale and display levels. The one at left shows clearly that the bulge model is too luminous when the stellar halo component is not included. The two panels in the last row are the corresponding images for model VEBD, i.e. bulge with varying ellipticity+disc.