Fig. 4
Top: the centroid velocity of the N2H+(3−2) emission versus the velocity of the NH3(1,1) emission. Bottom: Log-log plot of the N2H+(3−2) linewidth versus the NH3(1,1) linewidth. Prestellar cores are indicated by open diamonds and protostellar cores are marked by filled diamonds. In both plots, the dashed line shows the equality.
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