Fig. 1
Data of M 33 at their original resolution. Units are homogenized to facilitate the comparison between the different bands. At the distance of M 33, 1″ subtends ~4 pc. The white annulus, used to subtract the local background, is included for reference. The white circle at the bottom left (too tiny to be visible for bands with λ ≲ 350 μm) corresponds to the beam size.
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