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Table 7
Mean [Na/Fe] and [Zr/Fe] abundance ratios in the 1P and 2P stars in 47 Tuc and the corresponding p-values.
| 〈[X/Fe]〉1P | 〈[X/Fe]〉2P | p -value | |
|---|---|---|---|
| NaI(NLTE) | 0.247 ± 0.006 | 0.517 ± 0.009 | <10−15 |
| Zr I (LTE) | 0.310 ± 0.008 | 0.372 ± 0.007 | <10−7 |
| Zr I (LTE), | 0.331 ± 0.008 | 0.361 ± 0.007 | 0.007 |
| CN-adjusted | |||
Notes. Uncertainties are standard errors of the mean. The last line provides the values obtained with Zr abundances in 237 RGB stars adjusted to account for the influence of CN blends (see Sect. 4.3.1.
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