Fig. B.1
Spectra of N2D+ (2–1) and N2H+ (3–2) obtained towards the sources classified as HMSCs. For each spectrum, the velocity interval shown is ± 10 km s-1 from the systemic velocity listed in Table A.1. The y-axis is in main beam brightness temperature units. In the spectra of I00117-MM2, the vertical bars show the position of the hyperfine components.
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