Table 4
Median shift and dispersion of velocity differences between Z_VI, Z_PIPE, Z_PCA and Z_MGII for the full DR14Q sample and the CORE sample only.
| Median Δ v | σΔv | |
|---|---|---|
| (km s−1) | (km s−1) | |
| Full sample (178 981 quasars) | ||
| zVI −zMgII | −59.7 | 585.9 |
| zPIPE −zMgII | −54.8 | 697.2 |
| zPCA −zMgII | −8.8 | 586.9 |
| CORE sample (151 701 quasars) | ||
| zVI −zMgII | −61.7 | 581.0 |
| zPIPE −zMgII | −57.9 | 692.1 |
| zPCA −zMgII | −9.3 | 577.4 |
Notes. These numbers are derived from a subsample of 178 981 quasars from DR14Q for which we have the four redshift estimates available. We also restrict this analysis to 151 701 CORE quasars for which we also have the four different redshift estimates. See Fig. 3 for the full distributions.
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