Table 4
Average properties of radio-selected SF-candidates without an X-ray detection in C-COSMOS.
| Selection | No. of | Avg. radio | Avg. | Band | Exposure | Net | X-ray | Lumi- | 1 − pdetect | 1 − pcts | Γ |
| candidates | flux (mJy) | redshift | (Ms) | counts | flux | nosity | |||||
|
|
|||||||||||
| S1.4 GHz ≤ 0.20 | 156 | 0.113 | 0.67 | soft | 16.9 | 176 ± 20 | 4.8 | 0.94 | 99.99% | 99.99% | [1.5– |
| " | " | " | " | hard | 17.7 | 105 ± 25 | 4.8 | 0.94 | 99.98% | >99.99% | 2.5] |
| 0.20 < S1.4 GHz ≤ 0.63 | 43 | 0.292 | 0.58 | soft | 4.3 | 80 ± 11 | 8.2 | 1.1 | 99.96% | 99.92% | [1.7– |
| " | " | " | " | hard | 4.5 |
|
8.2 | 1.1 | — | — | 3.8] |
Notes. Radio fluxes in mJy; X-ray fluxes in 10-18 erg s-1 cm-2; X-ray luminosities (rest frame) in 1040 erg s-1. The counts are reported with their 68.3% error intervals. The fluxes have been calculated by fitting the stacked spectra with an imposed Γ = 2.1 (this slope has the characteristic of making the 0.5–2 and 2–10 keV fluxes approximately the same; considering the rounding of non-significant digits, this explains why the fluxes are the same in the two bands). All values for the soft band are relative to the 0.5–2 keV interval, while for the hard band counts are in the 2–7 keV, and fluxes and luminosities are in the 2–10 keV bands. The allowed spectral slope (Γ) range is given in the last column.
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