Open Access
Table 4.
Age estimates for NGC 6121 found in the literature.
| Reference | Age [Gyr] |
|---|---|
| Caputo et al. (1985) | 12 ± 2 |
| Hansen (2002) | 12.7 ± 0.7 |
| Salaris & Weiss (2002) | 11.7 ± 1.1 |
| Dotter et al. (2010) | 12.5 ± 0.5 |
| VandenBerg et al. (2013) | 11.5 ± 0.4 |
| Wagner-Kaiser et al. (2017) | 13.493 |
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