Table 3.
Redshift calibration for the five tomographic bins used in the KiDS-1000 cosmology analyses.
| Bin | Δ⟨z⟩SOM | δzCZ ± stat. ± syst. | δzCZ ± stat. ± syst. | δzCZ ± comb. |
|---|---|---|---|---|
| MICE | MICE | KiDS | KiDS | |
| 1 | 0.000 ± 0.011 | 0.001 ± 0.002 ± 0.004 | −0.001 ± 0.004 ± 0.004 | −0.001 ± 0.012 |
| 2 | 0.002 ± 0.011 | −0.002 ± 0.002 ± 0.004 | 0.004 ± 0.003 ± 0.005 | 0.004 ± 0.013 |
| 3 | 0.013 ± 0.012 | 0.004 ± 0.003 ± 0.010 | 0.011 ± 0.004 ± 0.016 | 0.011 ± 0.020 |
| 4 | 0.011 ± 0.009 | 0.015 ± 0.001 ± 0.024 | −0.008 ± 0.006 ± 0.007 | −0.008 ± 0.013 |
| 5 | −0.006 ± 0.010 | 0.003 ± 0.002 ± 0.004 | 0.003 ± 0.007 ± 0.003 | 0.003 ± 0.013 |
Notes. Bias in the mean redshift (Col. 2) as estimated with the SOM method from the MICE mocks (W20a). The uncertainties have been multiplied by a factor of two to account for residual differences between mocks and data. Columns 3 and 4 report the best-fit values for the δzCZ parameters (defined in Eq. (9)) on the MICE mocks and the KiDS-1000 data, respectively. The values from Col. 4 are based on fits to the SOM redshift distributions, which carry their own uncertainty (Col. 2). In Col. 5 we report the same shifts as in Col. 4 but combine all sources of uncertainty.
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