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Table 2
Summary of VUDS redshift reliability flags.
| zflag | Reliability | Comments |
|
|
||
| 4 | 100% | High S/N with many absorption and/or emission lines; strong cross-correlation signal with excellent |
| continuum match to templates | ||
| 3 | 95–100% | Moderate to high S/N with several absorption and/or emission lines; strong cross-correlation signal with good to |
| excellent continuum match to templates | ||
| 2 | 70–80% | Moderate S/N with matching absorption and/or emission lines; |
| good cross-correlation signal | ||
| 1 | 40–50% | Low S/N lines or continuum; weak to moderate cross-correlation signal |
| 9 | 80 % | Single emission line spectrum; the line has moderate to high S/N. |
| Redshift is assigned based on the exclusion of alternative solutions | ||
| in the absence of other expected key features | ||
| 1X | – | Like flag X but spectral features indicate the presence of an AGN |
| 2X | – | Like flag X but for a secondary target falling in the slit of a primary |
| 3X | – | Like flag X but the spectrum shows two line systems at different redshifts, the highest of the two redshifts is given as zspec |
| 4X | – | Like flag X but the two spectra are close in velocity indicative of a physical pair |
| -2X | – | Like flag X but for a secondary target falling in the slit of a primary |
| but not present in the photometric parent catalogue | ||
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