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) |
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Mosaic spacing |
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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) |
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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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