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Table 3.
Internal uncertainties on the BASE-9 log(age) determination for the different groups of OCs, namely those having [Fe/H] from spectroscopy (both HRS and LRS), photometry, or no information respectively.
| log(age) | Median σ/log(age) (Number of clusters) | |||
|---|---|---|---|---|
| interval | HRS+LRS | PHC | NC | All |
| 7.0−7.7 | 0.0023 (6) | 0.0027 (8) | 0.0019 (41) | 0.0021 (55) |
| 7.7−8.5 | 0.0017 (12) | 0.0039 (22) | 0.0047 (83) | 0.0040 (117) |
| 8.5−10.0 | 0.0003 (26) | 0.0051 (16) | 0.0034 (55) | 0.0027 (93) |
| 7.0−10.0 | 0.0007 (44) | 0.0039 (46) | 0.0034 (179) | 0.0029 (269) |
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