Fig. 9
Nonthermal velocity dispersion (σNT) vs. gas kinetic temperature derived from para-NH3 (1,1) for Serpens South (blue points) and W 40 (red points). The total dispersion of individual hyperfine structure (hfs) components are derived from the GILDAS built-in “NH3 (1, 1)” fitting method for the (1,1) line. The black lines represent the thermal sound speed.
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