Fig. A.5
Spectra of the isolated components of N2H+(1–0) (black), DCO+(2–1) (red), and H13CO+(1–0) (blue) towards the N2H+(1–0) emission peaks. For convenient comparison, the DCO+(2–1) spectra are shifted up by 1 K and the N2H+(1–0) spectra are shifted up by 0.5 K. The cores with an asterisk (*) near the title contain embedded protostrars.
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