Table 3.
Normalized median absolute deviation (σNMAD = 1.48 × median(||zphot − zspec||/(1 + zspec))) and fraction of photometric outliers η (i.e., fraction of sources with ||zphot − zspec||/(1 + zspec) > 0.15 with respect to the overall number of sources with spectroscopic redshift) in different X-ray surveys.
| Survey | Reference | Area | NBand (Narrow) | Accuracy | Outliers |
|---|---|---|---|---|---|
| deg2 | σNMAD | η | |||
| J1030 | This work | 0.09 | 21 (0) | 0.065 | 20.5% |
| J1030 | This work, no BL–AGN | 0.09 | 21 (0) | 0.060 | 12.7% |
| Lockman Hole | Fotopoulou et al. (2012) | 0.13 | 21 (0) | 0.069 | 18.3% |
| Stripe 82X | Ananna et al. (2017) | 31.3 | 14 (0) | 0.061 | 13.7% |
| AEGIS-XD | Nandra et al. (2015) | 0.29 | 35 (18) | 0.040 | 5.1% |
| CDF-S | Hsu et al. (2014) | 0.13 | 36 (18) | 0.014 | 6.7% |
| ECDF-S | Hsu et al. (2014) | 0.3 | 36 (18) | 0.016 | 10.1% |
| Chandra COSMOS-Legacy | Marchesi et al. (2016a) | 2.2 | 38 (18) | 0.015 | 6.0% |
Notes. We also report the number of filters used to compute the photometric redshifts and, in parentheses, the number of narrow-band filters used in the computation.
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