Open Access
Table 1
Parameters of the spectral lines used.
| Line | HCO+(1–0) | H13CO+(1–0) |
|---|---|---|
| Frequency | 89.189 GHz | 86.754 GHz |
| Beam (comb.) | 3.2″ × 2.4″ | 3.3″ × 2.5″ |
| Beam (30 m) | 28.2″ | 29″ |
| Res. (comb.) | 4100 AU, 0.02 pc | 4200 AU, 0.02 pc |
| Res. (30 m) | 41 000 AU, 0.21 pc | 42 000 AU, 0.21 pc |
Notes. The synthesized beam values for the combined data are taken from Beuther et al. (2022). “Res.” refers to the approximate linear spatial resolution, calculated using the distance to the DR20 subregion (1.46 kpc, Rygl et al. 2012).
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