Table A.1.
Sample statistics of the various sub-samples in each give selection.
| Selection | Samples |
|||||||
|---|---|---|---|---|---|---|---|---|
| XMM–Newton | XMM–Newton | High-z | XXL | SDSS–4XMM | SDSS–Chandra | Local AGN | Total | |
| z ≃ 3 | z ≃ 4 | |||||||
| Initial sample (1) | 29 | 1 | 64 (a) | 840 | 13 800 | 7036 | 15 | 21 785 |
| Main sample (2) | 29 | 1 | 64 | 840 | 9252 | 2392 | 15 | 12 593 |
| Dust & Host correction (Sect. 7.1) | 29 | 1 | 64 | 535 | 7319 | 1136 | 15 | 9099 |
| X-ray absorption (Sect. 7.2) | 14 ( † ) | 1 | 35 (b) | 259 | 2576 | 994 | 13 | 3921 |
| Eddington bias (Sect. 7.3) | 14 | 1 | 35 | 106 | 1644 | 608 | 13 | 2421 |
Notes. (1) These number counts refer to the sample statistics before correcting for overlaps amongst the sub-samples. (2) Sample statistics after accounting for overlaps and some preliminary selection (e.g RL, BAL, off-axis angle in the X-rays). The order of priority decreases from the leftmost to the rightmost column.
See Sect. 2.6.
35 quasars = 29 sources from Salvestrini et al. (2019) and 6 from Vito et al. (2019).
( † )Seven X-ray weak quasars are amongst the 15 objects excluded (see Nardini et al. 2019 for details).
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