Table 2.
Measured integrated flux densities from GMRT observations and the LoTSS-DR2, RACS, FIRST, and VLASS surveys.
| Source name | Redshift | α | S144 MHz | S383 MHz | S675 MHz | S1260 MHz | S887 MHz | S1.4 GHz | S3 GHz | M1450 Å | Ref. |
|---|---|---|---|---|---|---|---|---|---|---|---|
| J0002+2550 | 5.80 ± 0.02 |
 |
1.33 ± 0.37 | 0.33 ± 0.1 | 0.15 ± 0.05 | – | – | – | – | −27.66 | 1 |
| J0309+2717 | 6.10 ± 0.03 |
 |
66.5 ± 7.1 | 40.8 ± 4.3 | 37.7 ± 3.9 | – | 35.6 ± 4.0 | 23.9 ± 3.3 | 13.7 ± 1.6 | −25.1 | 2 |
| J0803+3138 | 6.38 ± 0.0 |
 |
1.3 ± 0.32 | 0.38 ± 0.1 | 0.3 ± 0.06 | 0.14 ± 0.05 | – | – | – | −26.49 | 3 |
| J0912+6658 | 5.62 ± 0.02 |
 |
1.23 ± 0.26 | 0.47 ± 0.17 | 0.63 ± 0.1 | 0.79 ± 0.12 | – | – | 0.9 ± 0.34 | −26.43 | 4 |
| J1037+4033 | 6.07 ± 0.03 |
 |
8.16 ± 0.97 | 4.94 ± 0.63 | 6.17 ± 0.67 | – | 9.28 ± 1.42 | 9.42 ± 1.09 | 10.5 ± 1.3 | −25.25 | 4 |
| J1133+4814 | 6.25 ± 0.02 |
 |
4.67 ± 0.79 | 3.48 ± 0.44 | 2.79 ± 0.31 | – | – | 3.23 ± 0.46 | 2.69 ± 0.63 | −25.0 | 4 |
| J1545+6028 | 5.78 ± 0.03 |
 |
0.87 ± 0.24 | 0.48 ± 0.17 | 0.29 ± 0.07 | – | – | – | – | −27.37 | 5 |
| J2201+2338 | 5.83 ± 0.02 |
 |
3.6 ± 0.73 | 2.32 ± 0.3 | 2.23 ± 0.26 | 1.33 ± 0.17 | 1.78 ± 0.55 | – | 0.67 ± 0.27 | −26.24 | 4 |
| J2336+1842 | 6.60 ± 0.04 |
 |
1.42 ± 0.53 | 0.28 ± 0.1 | 0.18 ± 0.07 | 0.19 ± 0.08 | – | – | – | −24.32 | 4 |
Notes. All integrated flux densities are in units of mJy with an added 10% uncertainty on the flux density errors. The spectral index α is determined from the power-law fitting routine. The literature references for the UV magnitudes M1450 Å of each source are indicated in the final column.
References. [1] Fan et al. (2004); [2] Belladitta et al. (2020); [3] Yang et al. (2021); [4] Gloudemans et al. (2022); [5] Wang et al. (2016).
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