Table 5
Properties of the initial PYBDSF catalogues and the final multi-wavelength catalogues in ELAIS-N1, Lockman Hole, and Boötes.
| ELAIS-N1 | Lockman Hole | Boötes | |
|---|---|---|---|
| No PYBDSF radio sources | 84 862 | 50 112 | 36 767 |
| No multi-wavelength sources | 2 106 293 | 3 041 956 | 2 214 358 |
| FLAG_OVERLAP(a) | 7 | 3 | 1 |
| Overlap Area [deg2] (b) | 6.74 | 10.28 | 8.63 |
| No PYBDSF radio sources overlap (c) | 31 059 | 29 784 | 18 766 |
| No optical sources overlap (c) | 1 470 968 | 1 906 317 | 1 911 929 |
| Multi-wavelength catalogue sky density [arcsec−2] | 0.0168 | 0.0143 | 0.0171 |
| PYBDSF radio catalogue sky density [arcsec−2] | 3.6 × 10−4 | 2.2 × 10−4 | 1.7 × 10−4 |
Notes. We also list here the overlapping multi-wavelength coverage area, the number of radio and multi-wavelength sources within this region, and the overlap bit flag, FLAG_OVERLAP for each field, which can be used to select both radio and multi-wavelength sources within our chosen area. (a) Overlap bit flag (FLAG_OVERLAP) provided in the full multi-wavelength catalogues and the radio cross-match catalogues indicating the coverage of each source. The overlap flag value in this table should be used to select sources in the overlapping multi-wavelength area defined in Sect. 2. (b) The overlap arealisted covers the overlapping multi-wavelength coverage (based on FLAG_OVERLAP) and excludes the region masked based on the Spitzer star mask. Radio-optical cross-matching is only performed for sources in this overlap area. (c) Number of radio (in initial PYBDSF list) and optical sources in the overlap area above can be selected using the flag combination of FLAG_CLEAN ≠ 3 and the respective FLAG_OVERLAP listed above.
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