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Fig. 2
Detection of H2 33 S (at ~168.3 GHz) toward the DF position of the Orion Bar. Red lines indicate hyperfine components. Blue lines show interloping lines from 13CCH. The length of each line is proportional to the transition line strength (taken from the Cologne Database for Molecular Spectroscopy, CDMS; Endres et al. 2016).
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