Top panels: Sgr B2(N) ALMA continuum emission image at 242 GHz compared to the VLA 40 GHz continuum emission in contours (left panel; from Rolffs et al. 2011, and convolved to 4) and to the SMA 345 GHz in contours (right panel; from Qin et al. 2011; convolved to ). The contour levels are from 10% to 100% in steps of 20% and the intensity peak is 0.085 Jy beam^-1, and from 5% to 100% in steps of 20% and the intensity peak is 2.82 Jy beam^-1 for the VLA and SMA images, respectively. Bottom panels: same as in the top panels for Sgr B2(M). The contour levels are from 2% to 100% in steps of 20% and the intensity peak is 0.62 Jy beam^-1, and from 5% to 100% in steps of 20% and the intensity peak is 3.41 Jy beam^-1 for the VLA and SMA images, respectively. In all panels, the crosses indicate the position of the continuum sources listed in Tables 1 and 2.