Spectral energy distribution from the modified blackbody fitting for a beamsize of 40′′ . The brown pluses represent the observed flux densities obtained from the ATLASGAL and Hi-GAL maps. The orange markers are the flux densities obtained with RADMC-3D including only dust. The solid blue line is the fitted SED and the dotted blue line is the SED from Etxaluze et al. (2013). Top: Sgr B2(N), bottom: Sgr B2(M).