Table 3.
Summary of the archival radio observations of MQC J021+19.
| Obs. | Sν | Survey | Resolution | Obs. date |
|---|---|---|---|---|
| Freq. | ||||
| (GHz) | (mJy) | (arcsec) | ||
| (1) | (2) | (3) | (4) | (5) |
| 0.150 | 2.05 ± 0.18 | LOFAR | 6 | 2018-06-12 |
| 0.8875 | 2.35 ± 0.66 | RACS low | 25 | 2020-05-02 |
| 1.3675 | 2.20 ± 0.65 | RACS mid | 16 × 9 | 2021-01-01 |
| 3.0 | 2.04 ± 0.34 | VLASS 1.2 | 2.5 | 2019-05-05 |
| 3.0 | 1.63 ± 0.30 | VLASS 2.2 | 2.5 | 2021-11-07 |
| 3.0 | 1.10 ± 0.20 | VLASS 3.2 | 2.5 | 2024-06-28 |
Notes. Col (1): Observed frequency in GHz. Col (2): integrated flux density in mJy; the VLASS flux densities were corrected for systematics as explained at https://science.nrao.edu/vlass/data-access/vlass-epoch-1-quick-look-users-guide; the error on the RACS and VLASS measurements takes the statistical error and systematic error into account, which is 0.5 mJy for RACS (see Sect. 3.4.4 in McConnell et al. 2020), 8% for VLASS 1.1 epoch, and 3% for VLASS 2.1 and later. Col (3): Reference survey. Col (4): Angular resolution in arcsec. Col (5): Date of the observation.
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