Table 1
Observational data summary for the W43-MM2 and W43-MM3 12 m array images and their combination.
| ALMA band (1) | Field (2) | Mosaic size (″ × ″) (3) | Θmaj × Θmin (″ × ″) (4) | BPA (°) (5) | Continuum bandwidth (GHz) (6) | Original RMS (mJy beam−1) (7) | Denoised RMS (mJy beam−1) (8) |
|---|---|---|---|---|---|---|---|
| 1.3 mm 228.4 GHz | W43-MM2 | 92 × 97 | 0.52 × 0.41 | 106 | 1.655 (cleanest) | 0.175 | – |
| 3.448 (bsens) | 0.132 | – | |||||
| W43-MM3 | 92 × 97 | 0.51 × 0.43 | 89 | 3.172 (cleanest) | 0.101 | – | |
| 3.448 (bsens) | 0.093 | – | |||||
| W43-MM2&MM3 | 158 × 120 | 0.51 × 0.42 | 98 | − (cleanest) | ~0.15 | – | |
| 3.448 (bsens) | ~0.11 | −0.08 | |||||
| 3.0 mm 99.66 GHz | W43-MM2 | 202 × 180 | 0.30 × 0.24 | 107 | 1.569 (cleanest) | 0.041 | – |
| 2.906 (bsens) | 0.026 | – | |||||
| W43-MM3 | 202 × 180 | 0.42 × 0.28 | 94 | 2.528 (cleanest) | 0.045 | – | |
| 2.906 (bsens) | 0.031 | – | |||||
| W43-MM2&MM3 | 275 × 202 | 0.46 × 0.46 | 101 | −(cleanest) | −0.048 | – | |
| 2.906 (bsens) | −0.028 | −0.021 | |||||
Notes. (4) Major and minor sizes of the beam at half maximum. Θbeam is the geometrical average of these two quantities. (5) Position angle of the beam, measured counterclockwise from north to east. (6) Spectral bandwidth used to estimate the continuum emission level, with the name of the associated image in parentheses (see their definition in Sect. 2). (7) Noise level as the root mean square (RMS) measured in the original map unities and thus with different beam sizes (see Col. 4). (8) Noise level measured in the MnGSeg denoised images (see Sect. 3 and Robitaille et al. 2019).
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