Table 5
Photo-z accuracy comparison in different cosmological fields.
| GALAXIES | |||||||||
| Survey | # Sourcesa | # Bandsb | λ-range | Depth | Code | # Temp.c | σ | ηd | Ref.e |
|
|
|||||||||
| COSMOS | 4148 | 30 (12) | UV–IRAC |
|
LePhare | 31 | 0.007 | <1 (0.15) | (1) |
| GOODS-N/HDF-N | ~130 | 7(–) | UBVIJHK | I814 ≤ 25 | BPZ | 6 | 0.06 | ~1.0 | (3, 4) |
| MUSYC (all) | 2551 | 32 (18) | Opt–8.0 μm | R ≤ 26 | EAzY | semi-analytical | ~0.010 | ~5.0 (0.10) | (6) |
| SWIRE (all) | 5982 | 6–10 (–) | 0.36–4.5 μm | r < 23.5 | ImpZ-2 | 9 | 0.035 | ~1.0 (0.15) | (7) |
| COMBO-17 | 813 | 17 (12) | 0.35–0.93 μm | R < 24 | – | PEGASE lib. | ~0.07 | ~2.0 (0.15) | (8) |
| NDWFS-Boötes | 14448 | 13 (–) | UV-Opt-NIR-MIR | R < 26 | χ2 min. | 4 LRTg | 0.041 | 5.0 | (10) |
| Lockman Hole | 209 | 21 (–) | FUV-Opt-NIR | Rc < 22.5 | LePhare | 31 | 0.034 | 10.0 (0.15) | (11) |
|
|
|||||||||
| AGN | |||||||||
| XMM-COSMOSf | 236 | 30 (12) | UV–IRAC |
|
Le Phare | 30/31 | 0.013 | 7.2 (0.15) | (2) |
| C-COSMOSf | 236 | 30 (12) | UV–IRAC |
|
Le Phare | 30 | 0.011 | 5.1 (0.15) | (2) |
| MUSYC (X–ray) | 236 | 32 (18) | Opt–8.0 μm | R ≤ 26 | EAzY | 1g | 0.012 | 12.0 (0.12) | (6) |
| CDF-S | 446 | 35 (18) | UV–8.0 μm | z ≤ 26 | ZEBRA | 265 | 0.01–0.06 | 1.4–8.1 (0.15) | (5) |
| SWIRE (QSO) | 158 | 6–10 (–) | 0.36-4.5 μm | r < 23.5 | ImpZ-2 | 9 | 0.093 | ~ 33.0 (0.10) | (7) |
| COMBO-17 (QSO) | 52 | 17 (12) | 0.35–0.93 μm | R < 24 | – | 1 | 0.007 | 17.3 (0.10) | (8,9) |
| NDWFS–Boötes | 5347 | 13 (–) | UV-Opt-NIR-MIR | R < 26 | χ2 min. | 4 LRTg | 0.05–0.18 | 5.0 | (10) |
| Lockman Hole | 90 | 21 (–) | FUV-Opt-NIR | Rc < 22.5 | LePhare | 30 | 0.069 | 18.9 (0.15) | (11) |
| ALHAMBRA | 170 | 23 (20) | Opt–NIR | m678 ≤ 23.5h | LePhare | 50 | 0.009 | 12.3 (0.15) | (12) |
Notes.
Maximum number of photometric bands used for photo-z determination. In parenthesis, the number of those filters that have a narrow or medium passband.
Percent fraction of outliers. Outlier threshold criteria defined as |Δz|/(1 + zspec) in parenthesis.
References: (1) = Ilbert et al. (2009); (2) = Salvato et al. (2011); (3) = Benítez et al. (2000); (4) = Coe et al. (2006); (5) = Luo et al. (2010); (6) = Cardamone et al. (2010); (7) = Rowan-Robinson et al. (2008); (8) = Wolf et al. (2004); (9) = Wolf et al. (2008); (10) = Assef et al. (2010); (11) = Fotopoulou et al. (2011); (12) = this work.
We refer here to the sub-sample of point-like/variable sources from the total XMM COSMOS catalog (the QSOV sample).
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