Table 1.
Image properties and flux density measurements of the sample.
| NGC | VCC | LOFAR | σrms, 144 MHz | S144 MHz | MeerKAT | σrms, 1.3 GHz | S1.3 GHz |
|---|---|---|---|---|---|---|---|
| pointings | [μJy beam−1] | [Jy] | pointings | [μJy beam−1] | [Jy] | ||
| 4262 | 355 | 2, 3 | 240 | (1.2 ± 0.3)×10−3 | 93, 115 | ||
| 4365 ( * ) | 731 | 4, 7, 8 | 277 | < 1.0 × 10−3 | 102, 123, 124, 135 | 12.3 | 1.9 × 10−4 |
| 4374 | 763 | M 87, 2, 3 | 320 | (2.1 ± 0.4)×101 | 51, 74 | 182 | (4.6 ± 0.5) |
| 4406 | 881 | M 87, 2, 3 | 143 | (1.1 ± 0.2)×10−2 | 50, 74 | 115 | (1.9 ± 0.5)×10−3 |
| 4435 | 1030 | M 87, 2, 3 | 133 | (1.1 ± 0.2)×10−2 | 50, 73 | 147 | (3.3 ± 0.4)×10−3 |
| 4459 | 1154 | M 87, 2, 3 | 106 | (4.0 ± 0.9)×10−3 | 92, 93 | 49.7 | (2.2 ± 0.2)×10−3 |
| 4472 | 1226 | 4, 5, 7, 8 | 221 | (3.6 ± 0.7) | 64, 83, 84 | 17.1 | (2.5 ± 0.3)×10−1 |
| 4486 | 1316 | M 87, 2, 3, 4 | 460 | (1.2 ± 0.2)×103 | 28 | 252 | (2.0 ± 0.2)×102 |
| 4526 | 1535 | 4, 5, 7, 8 | 220 | (3.2 ± 0.6)×10−2 | 82, 103 | 16.1 | (1.2 ± 0.1)×10−2 |
| 4552 | 1632 | M 87, 1, 2, 5, 6 | 121 | (1.5 ± 0.3)×10−1 | 46 | 34.6 | (6.4 ± 0.6)×10−2 |
| 4621 | 1903 | 1, 5, 6 | 162 | (1.5 ± 0.3)×10−3 | 65, 66, 85 | 10.9 | (2.0 ± 0.2)×10−4 |
| 4649 | 1978 | 1, 5, 6 | 216 | (2.0 ± 0.4)×10−1 | 65, 85, 285 | 16.2 | (3.3 ± 0.3)×10−2 |
| 4660 | 2000 | 5,6 | 207 | (2.3 ± 0.1)×10−3 | 280, 285 | 11.3 | (3.4 ± 0.2)×10−4 |
Notes. ( * )NGC 4365 is not detected at a surface brightness significance of 4σ in LOFAR. Column description: (1) NGC entry; (2) VCC entry; (3) LOFAR pointings; (4) LOFAR rms noise in 9″ × 5″ map; (5) 144 MHz flux density; (6) MeerKAT pointings; (7) MeerKAT noise level; (8) MeerKAT flux density.
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