Table 1.
Individual stellar populations in NGC 6752 and NGC 2808.
| ID | δY | N/Ntot |
|---|---|---|
| NGC 6752 | ||
| Age = 13.00, [Fe/H] = −1.54 | ||
| Red | 0.00 | 0.31 ± 0.03 |
| Middle | 0.008 | 0.41 ± 0.02 |
| Blue | 0.026 | 0.28 ± 0.03 |
| NGC 2808 | ||
| Age = 12.00, [Fe/H] = −1.14 | ||
| A | −0.033 ± 0.003 ( * ) | 0.058 ± 0.005 |
| B | 0.000 ± 0.002 | 0.174 ± 0.009 |
| C | 0.002 ± 0.004 | 0.264 ± 0.012 |
| D | 0.040 ± 0.005 | 0.313 ± 0.013 |
| E | 0.09 ± 0.005 | 0.191 ± 0.010 |
Notes. Columns display: name of the population or sequence (ID), helium enhancement (δY), and number fraction (N/Ntot). See Milone et al. (2013), Harris (1996, 2010), Yong et al. (2005), Carretta et al. (2010), T20, Marino et al. (2014), Milone et al. (2015), Carretta (2015). ( * )See text for details.
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