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Table 3
Abundance differences between the populations of NGC 2808.
| Element | Pop. | Δ Abundance (Px – P1) | |
|---|---|---|---|
| This work | Milone et al. (2015) | ||
| O | 2 | −0.11 ± 0.10 | −0.14 ± 0.09 |
| O | 3 | −0.82 ± 0.35 | −0.67 ± 0.07 |
| O | 4 | >−1.05 | −0.96 ± 0.14 |
| Na | 2 | 0.14 ± 0.06 | 0.18 ± 0.09 |
| Na | 3 | 0.35 ± 0.05 | 0.37 ± 0.10 |
| Na | 4 | 0.50 ± 0.06 | 0.76 ± 0.14 (0.60) |
| Mg | 2 | −0.03 ± 0.02 | 0.03 ± 0.14 |
| Mg | 3 | −0.15 ± 0.06 | ... (−0.18) |
| Mg | 4 | −0.20 ± 0.09 | ... (−0.43) |
| Al | 2 | 0.18 ± 0.17 | 0.18 ± 0.15 |
| Al | 3 | 0.87 ± 0.16 | ... (1.00) |
| Al | 4 | 1.12 ± 0.16 | ... (1.20) |
Notes. The values in parenthesis are estimated from the abundances of Carretta (2015).
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