Table 2
Information about the ALMA observations in this work.
| Source | rms(a,c) | Mass rms(a,d) | Beam(a) | Resolution(a) | Config. | Baseline(b) | Antennas(b) | Time(b,e) | Observation period(b) | PWV(b) | Main array calibrators(f) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| mJy Beam−1 | M⊙ Beam−1 | ′′ × ′′ | pc × pc | m | m | MM/YYYY | mm | Flux & Phase | |||
| AS1 | C: 0.55 | C: 0.15 | C: 1.80 × 0.99 | C: 0.027 × 0.015 | C43-2 | M: 15–314 | M: 46 | M: 0.81 | M: 05/2018 | M: 1.0 | Titan & J1832-2039 |
| A: 2.0 | A: 0.55 | A: 6.76 × 3.90 | A: 0.102 × 0.059 | A: 9–49 | A: 8–11 | A: 6.05 | A: 07&05/2017 | A: 0.9 | |||
| NA1 | C: 0.20 | C: 0.09 | C: 1.98 × 0.98 | C: 0.030 × 0.015 | C43-2 | M: 15–314 | M: 46 | M: 0.81 | M: 05/2018 | M: 1.0 | Titan & J1832-2039 |
| A: 1.0 | A: 0.45 | A: 6.98 × 3.96 | A: 0.106 × 0.060 | A: 9–49 | A: 8–11 | A: 6.05 | A: 07&05/2017 | A: 0.9 | |||
| AS2 | C: 0.16 | C: 0.04 | C: 1.46 × 1.02 | C: 0.023 × 0.016 | C43-2 | M: 15–314 | M: 47 | M: 0.81 | M: 05/2018 | M: 1.1 | Titan & J1832-1035 |
| A: 1.7 | A: 0.43 | A: 6.39 × 4.73 | A: 0.102 × 0.076 | A: 9–48 | A: 8–10 | A: 5.04 | A: 08/2017 | A: 0.9 | |||
| NA2 | C: 0.15 | C: 0.05 | C: 1.44 × 1.02 | C: 0.022 × 0.015 | C43-2 | M: 15–314 | M: 47 | M: 0.81 | M: 05/2018 | M: 1.1 | Titan & J1832-1035 |
| A: 1.2 | A: 0.40 | A: 6.35 × 4.70 | A: 0.097 × 0.072 | A: 9–48 | A: 8–10 | A: 5.04 | A: 08/2017 | A: 0.9 | |||
| AS3 | C: 0.15 | C: 0.16 | C: 1.29 × 1.04 | C: 0.031 × 0.025 | C43-2 | M: 15–314 | M: 46 | M: 0.81 | M: 06/2018 | M: 1.1 | Titan & J1832-1035 |
| A: 1.5 | A: 1.6 | A: 7.48 × 4.07 | A: 0.183 × 0.099 | A: 9–49 | A: 9–12 | A: 4.03 | A: 07/2017 | A: 0.8 | |||
| NA3 | C: 0.15 | C: 0.15 | C: 1.48 × 1.04 | C: 0.035 × 0.025 | C43-2 | M: 15–314 | M: 47 | M: 0.81 | M: 05/2018 | M: 1.1 | Titan & J1832-1035 |
| A: 1.2 | A: 1.2 | A: 6.36 × 4.75 | A: 0.151 × 0.113 | A: 9–48 | A: 8–10 | A: 5.04 | A: 08/2017 | A: 0.9 | |||
| AS4 | C: 0.20 | C: 0.07 | C: 1.63 × 1.31 | C: 0.027 × 0.022 | C40-2 | M: 15–287 | M: 45 | M: 1.01 | M: 03/2017 | M: 2.7 | Titan & J1603-4904 |
| A: 1.0 | A: 0.35 | A: 6.19 × 4.55 | A: 0.102 × 0.075 | A: 8–44 | A: 10–12 | A: 3.53 | A: 05/2017 | A: 1.8 | |||
| NA4 | C: 0.16 | C: 0.13 | C: 1.36 × 1.06 | C: 0.030 × 0.023 | C43-2 | M: 15–314 | M: 46 | M: 0.81 | M: 06/2018 | M: 1.1 | Titan & J1832-1035 |
| A: 1.2 | A: 0.98 | A: 7.18 × 4.26 | A: 0.157 × 0.093 | A: 9–49 | A: 9–12 | A: 4.03 | A: 07/2017 | A: 0.8 | |||
Notes. (a) “C” and “A” in the second to fifth columns represent the information derived from cleaned continuum images of 12 m + 7 m combined data and 7 m data, respectively.(b)“M” and “A” in the seventh to eleventh columns represent the observational information of 12 m main array and 7 m ACA, respectively. (c) The rms noise in the cleaned continuum images, see Sect. 3.2. (d) The rms mass sensitivity is estimated with the rms noise in cleaned continuum images, using Eq. (1). (e) Time on source. It is estimated by the CASA Analysis Utilities task “TimeOnSource”, see details in https://casaguides.nrao.edu/index.php?title=TimeOnSource. (f) The 7 m ACA calibrators are different for different observations. Flux calibrators: Titan, Neptune, and J1733-1304 for AS1 and NA1; Neptune and J1733-1304 for AS2, NA2, AS3, NA3, and NA4; Titan, Callisto, and Ganymede for AS4. Phase calibrators: J1833-210B and J1832-2039 for AS1 and NA1; J1833-210B and J1733-1304 for AS2, NA2, and NA3; J1851+0035 for AS3 and NA4; J1650-5044 for AS4.
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