CSO continuum emission at 350 μm (gray map) and red contours, which depict [3, 6, 9, 15, 25, 35, 45, 55, 65, 75, 85, and 95] times the rms noise (80 mJy beam⁻¹). The red and black circles in the lower left corner show the CSO and ALMA beam size, respectively. Blue contours represent the 80%, 40%, and 33% levels of the ALMA primary beam for each target region, labeled N, F1, F2, F3, and S.