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Fig. 1

image

SPIRE 250 μm emission observed toward the = 224° region, with a (logarithmic) color-scale in MJy sr-1 (Elia et al. 2013). Blue star symbols represent protostellar clumps while the red empty circles represent starless clumps. The dashed, black contour shows the region mapped with the Mopra telescope. The yellow and blue solid contours correspond to about 100 and 200 MJy sr-1, respectively, and approximately trace the secondary filament toward the north (besides to low-level emission from the main filament) and the main filament.

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