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Fig. 1

image

Top: our APEX/LABOCA image, with the 34 sources at 870 μm. Black open circles correspond to the LABOCA identified sources, with a 27.6 arcsec beam size. The total size of the map is about 38 arcmin in diameter. The cyan lines represent the Hα emission (Virginia Tech Spectral line Survey with 6 arcmin resolution, Finkbeiner 2003). Bottom: color scale: MIPS image at 24 μm of B30. Black contours correspond to 3, 5, 7, 9, 12 and 15 times the rms noise of the 870 μm emission (which varies across the image and it increases toward the edge of the map). The 34 submm identified sources are marked with red labels.

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