Table 1.
Observation and data reduction details of the primary datasets..
| B6SB | B6LB | B7 | |
| νcentral [GHz] | 258.821 | 258.821 | 349.556 |
| λcentral [mm] | 1.16 | 1.16 | 0.86 |
| Beam [mas2] | 127 × 102 | 21.5 × 18.7 | 49.0 × 28.9 |
| Beam [pc2] | 2.5 × 2.0 | 0.4 × 0.4 | 1.0 × 0.6 |
| P.A. [°] | −30.9 | 26.7 | 18.0 |
| MRS [″] | 1.616 | 0.375 | 0.595 |
| Int. time [′] | 37 | 90 | 93 |
| Sens. [μJy/bm] | 22.0 | 13.0 | 40.9 |
| Obs. date | 15 Aug 2019 | 6 Jun 2019 | 13 Jul 2019 |
| Transitions | HCO+(3-2) | HCO+(3-2) | HCO+(4-3) |
| HCN(3-2) | HCN(3-2) | HCN(4-3) | |
| CO(3-2) | |||
| Pipeline | 42254M | 42254M | 2021.2.0.128 |
| Self-cal iter.: | |||
| phase | 7 | 4 & 6 | 5 & 2 |
| amplitude | 1 | 1 & 1 | 0 & 0 |
Notes. The cited beam sizes represent those of the respective continuum maps imaged using Briggs weighting (robust parameter = 0.5). The maximal recoverable scales (MRS) were derived using Eq. (3.27) in Warmels et al. (2018). The sensitivity is defined as the background rms noise measured in an emission-free region of the continuum map. Self-calibration iteration numbers separated by ‘&’ represent separate measurement sets that together make up one dataset. See Table A.1 for the details on the auxiliary datasets in bands 3, 4, 5 and 9.
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