Table 1.
Spectroscopic redshift surveys used for the calibration of KV450 photo-z.
| Survey | Area | No. of | z-max | rlim | Used for |
|---|---|---|---|---|---|
| [deg2] | spec-z | ||||
| SDSS* | 119.2 | 15 564 | 0.7 | CC/OQE | |
| GAMA* | 75.9 | 79 756 | 0.4 | 19.8 | CC/OQE |
| 2dFLenS* | 61.2 | 3914 | 0.8 | CC/OQE | |
| WiggleZ* | 60.1 | 19 968 | 1.1 | CC/OQE | |
| zCOSMOS | 0.7 | 9930 | 1.0 | 24 | CC/DIR |
| DEEP2 | 0.8 | 6919 | 1.5 | 24.5 | CC/DIR |
| VVDS* | 1.0 | 4688 | 1.3 | 25 | CC/DIR |
| G15Deep* | 1.0 | 1792 | 0.7 | 22 | DIR |
| CDFS | 0.1 | 2044 | 1.4 | 25 | DIR |
Notes. Second column contains the overlap area used for calibration after quite conservative masking for good, homogeneous coverage (by the spec-z survey as well as KiDS and VIKING). The numbers in the third column correspond to the objects with secure spectroscopic redshift measurements in the overlap area. The maximum redshift in the fourth column is an approximate estimate up to which redshift data from a particular survey contribute significantly to the calibration. The last column reports which redshift calibration techniques make use of the different samples. An asterisk in the first column indicates new calibration data that were not used in H17.
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