Table 2
Summary of dual-band observations and continuum images.
| CMZ cloud | On-source time (LB/SB) | Resolution | MRS | Noise | Dynamic range | |
|---|---|---|---|---|---|---|
| (mins per pointing) | (′′×′′) | (au × au) | (′′) | (μJy beam−1) | ||
| ALMA band 3 | ||||||
| 20 km s−1 | 35.1/15.6 | 0.32 × 0.23 | 2600 × 1900 | 14.4 | 12 | 257 |
| Sgr C | 38.6/17.2 | 0.34 × 0.23 | 2800 × 1900 | 13.6 | 11 | 340 |
| cloud e | 71.4/8.6 | 0.30 × 0.20 | 2400 × 1600 | 9.7 | 10 | 191 |
| ALMA band 6 | ||||||
| 20 km s−1 | 5.6/1.8 | 0.25 × 0.17 | 2000 × 1400 | 6.4 | 45 | 459 |
| Sgr C | 5.3/1.8 | 0.25 × 0.17 | 2000 × 1400 | 6.4 | 45 | 1006 |
| cloud e | 5.4/1.8 | 0.25 × 0.17 | 2000 × 1400 | 6.4 | 43 | 676 |
Notes. On-source integration time (per pointing) is listed for two configurations: longer baseline (LB) and shorter baseline (SB), respectively. For band 3, they are C 7 and C 4; for band 6, C 5 and C 3. Resolution: continuum image resolution. MRS: maximum recoverable scale. Noise: rms measured from the images without primary beam correction. Dynamic range: image dynamic range, defined as the peak value over noise rms.
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