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Fig. 1

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Peak temperature Tpeak maps of the NOEMA and 30m telescope observations. The black symbols represent YSOs in the region, summarized in Table 2: stars mark the positions of Class 0, I, and 0/I protostars, circles represent flat-spectrum objects, and diamonds mark Class II sources. The protostars are labeled following Table 2. Left: N2H+ J = 1 − 0, F1F = 01 − 12 Tpeak. Right: HC3N J = 10 − 9 Tpeak.

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