Upper panel: flux density versus wavelegnth (SED). The curve is the best fit model and the associated fitted values are indicated. Lower maps: 3.6, 5.8, 8, 21/22/24, 70, 160, 250, 350, 500, and 870 μm, 1.2 mm, and high-resolution N_H2 column density maps. Ellipses represent the 160 μm getsources footprints. The MDCs is identified by a cross on the 70 μm image.“Lum.Fit” is the flux integration under the fitted curve (noted L_Fit in the main text) while “Lum. Data.” corresponds to the integral, using the trapezoid rule, over the finite number of data-points sampling the SED (noted L_Data in the main text).