Table 1
Parameters of the radio surveys utilised for identifying radio-bright stellar systems.
| Survey name | vsurvey | Resolution | Median rms | AA | texp | Source density | Ωsurvey |
|---|---|---|---|---|---|---|---|
| LoTSS-DR2 | 120–168 MHz | 6″ | 83 µJy beam−1 | 0.2″ | 3451 h | 780 sources deg−2 | 5634 deg2 |
| V-LoTSS | 120–168 MHz | 20″ | 140 µJy beam−1 | 0.2″ | 3451 h | 0.012 sources deg−2 | 5634 deg2 |
| VLASS (per epoch) | 2–4GHz | 2.5″ | 130 µJy beam−1 | 1″ | 1833 h | 100 sources deg−2 | 33 885 deg2 |
Notes. The symbols vsurvey, AA, texp, and Ωsurvey represent radio survey frequency coverage, absolute astrometric accuracy, exposure time, and the sky coverage, respectively. The final uncertainty in the radio position must also factor in the astrometric precision that depends on the S/N of the detection. For example, a LoTSS source with <1 mJy has an average astrometric precision of 0.5” (Callingham et al. 2019). The Ωsurvey of V-LoTSS is slightly larger since Callingham et al. (2023) searched for sources further down the primary beam of single LoTSS pointing where the noise would have been higher than if the data were mosaicked.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.