a) Column density map of N(H₂); b) Dust temperature map; and c) map obtained using pixel-by-pixel modified blackbody fit to 70, 160, 250, 450 and 850 μm fluxes from the maps of IRAS 18511+0146. The beamsize is shown as a filled circle in the lower left-hand corner of a). The region enclosed within the dashed line in a) represents the aperture for estimating the SED of this region. The crosses in all the panels depict the positions of sources S7, S10 and S11, shown in b).