Table 2
Summary of the observational parameters of C18O (2–1) spectral line.
| Protocluster (name) | Spectral resolution (km s−1) | Beam major (θmajor) (″) | Beam minor (θminor) (″) | Position angle (PA) (°) | RMS noise (σrms) (mJy beam−1) |
|---|---|---|---|---|---|
| W43-MM1 | 0.17a | 0.65 | 0.49 | −80.63 | 5.0 |
| W43-MM2 | 0.33 | 0.79 | 0.63 | −83.67 | 4.1 |
| G327.29 | 0.33 | 0.86 | 0.79 | −55.97 | 18.6 |
| G328.25 | 0.33 | 1.23 | 1.21 | −37.49 | 29.8 |
| G337.92 | 0.33 | 0.70 | 0.55 | −49.02 | 9.6 |
| G338.93 | 0.33 | 0.77 | 0.70 | 76.36 | 8.0 |
| W43-MM3 | 0.33 | 0.76 | 0.67 | 84.49 | 4.8 |
| W51-E | 0.33 | 0.42 | 0.33 | 29.81 | 6.3 |
| G008.67 | 0.33 | 0.97 | 0.78 | −82.98 | 15.7 |
| G351.77 | 0.33 | 1.14 | 0.89 | 88.68 | 20.0 |
| G353.41 | 0.33 | 1.19 | 0.91 | 85.55 | 21.0 |
| W51-IRS2 | 0.33 | 0.76 | 0.68 | −26.43 | 4.5 |
| G010.62 | 0.33 | 0.65 | 0.49 | −67.97 | 12.8 |
| G012.80 | 0.33 | 1.33 | 0.90 | 77.41 | 19.0 |
| G333.60 | 0.33 | 0.76 | 0.69 | −23.64 | 8.1 |
Notes. Col. 1: source name of the protoclusters. Col. 2: spectral resolution of the observations. Col. 3: size of the major axis of the clean beams. Col. 4: size of the minor axis of the clean beams. Col. 5: position angle (PA) of the clean beams. Col. 6: achieved RMS noises of the C18O (2–1) feathered image cubes. a Only for W43-MM1 region, the spectral resolution is 0.17 km s−1, because this data was taken from the pilot project of Motte et al. (2018).
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