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Fig. 1


Regions of the Serpens SE cluster observed with Spitzer/IRS and Herschel/PACS superimposed on a Spitzer IRAC 4.5 μm image. Dark orange, green, and blue rectangles correspond to the areas mapped with Spitzer/IRS modules SL1, SL2, and LL1/LL2, respectively. Orange crosses denote the 5 × 5 Herschel/PACS footprints around the protostellar sources SMM3 and SMM4. Positions of known embedded sources in the region are indicated with filled red circles.

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