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Table 1.

Characteristics of ALMA observations toward the MQN01 field.

Band 3 Band 6
Tuning central wavelength (1) 2.94 mm 1.26 mm
SPW central frequencies 95.00, 96.80, 107.20, 109.00 GHz 229.20, 231.00, 243.20, 245.00 GHz
SPW bandwidth 1.875 GHz 1.875 GHz

RA extrema (ICRS) (00:41:23.06, 00:41:41.49) (00:41:25.03, 00:41:39.51)
Dec extrema (ICRS) (–49:37:55.58, –49:34:43.58) (–49:37:33.84, –49:35:07.14)
No. of pointings 27 114
HPBW primary beam (FoV) (2)
Mosaic spacing
Sky area coverage (3) 6.1308 arcmin2 4.4051 arcmin2

Number of antennas (12 m) 41 − 46 40 − 44
Baselines (m) 14.9 − 976.6 14.6 − 500.2
Synthesized beam size (4)
Synthesized beam PA (4) −57.25 deg 89.92 deg

Observation dates 2022 January 6–May 19 2022 April 3–13
Flux calibrator J2357-5311 J2258-2758
Mean PWV (mm) (5) 1.8 − 6.2 0.3 − 2.4
Total time on science target 16.3 h 3.3 h
RMS representative bandwidth (6) 0.12 mJy beam−1 42 μJy beam−1

Notes. (1)Central wavelength of the entire frequency setting. (2)Half power beam width (i.e., ∼1.13 × λ/D, where λ is the observed wavelength, and D is the ALMA antenna diameter; see Remijan et al. 2019) at the representative frequency of 109.00 GHz (band 3) and 245.00 GHz (band 6). (3)Observed sky angular area with PB sensitivity ≥50%. (4)Synthesized beam size and position angle (PA) at the representative frequency in the case of a natural weighting scheme of the visibilities. (5)Mean precipitable water vapor during observations. (6)The representative bandwidth is 100 km s−1 (corresponding to 36.358 MHz) at the representative frequency of band 3 and 6.89 GHz (aggregate continuum) for band 6 observations.

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