Fig. A.1
Continuum images at 102 GHz obtained with ALMA. The color bar shows the intensity scale in Jy beam−1 for W31C(G10.6-0.4), W28A2 (G5.89-0.4), SgrB2 and G0.02-0.07 with the peak value given at the top of the color bar. In the SgrB2 image, the source in the middle is the SgrB2-S H II region and the strong source at the top is SgrB2-M.
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