Table 1
Observations used in the study.
| Cluster | ΔY | [Fe/H] | Δ[Al/Fe] | Δ[N/Fe] | Δ[Na/Fe] |
|---|---|---|---|---|---|
| 104 | 0.049 | −0.8 | 0.23 | 1.11 | 0.53 |
| 1851 | 0.025 | −1.1 | 0.39 | 1.21 | − |
| 2808 | 0.124 | −1.1 | 0.99 | 1.07 | 0.44 |
| 288 | 0.016 | −1.3 | 0.19 | 0.87 | 0.65 |
| 3201 | 0.028 | −1.4 | 0.48 | 0.97 | 0.51 |
| 362 | 0.026 | −1.1 | 0.28 | 1.03 | − |
| 4590 | 0.012 | −2.2 | 0.61 | 0.86 | 0.47 |
| 5024 | 0.044 | −1.9 | 0.65 | 0.94 | − |
| 5053 | 0.004 | −2.2 | 0.68 | 0.82 | − |
| 5272 | 0.041 | −1.4 | 0.54 | 0.89 | − |
| 5466 | 0.007 | −1.8 | 0.16 | 0.89 | − |
| 5904 | 0.037 | −1.2 | 0.62 | 1.11 | 0.52 |
| 6121 | 0.014 | −1.1 | 0.32 | 1.05 | 0.46 |
| 6171 | 0.024 | −1.0 | 0.24 | 1.27 | 0.52 |
| 6205 | 0.052 | −1.5 | 1.01 | 1.11 | − |
| 6218 | 0.011 | −1.3 | 0.23 | 1.03 | 0.57 |
| 6254 | 0.029 | −1.5 | 0.92 | 1.04 | 0.54 |
| 6341 | 0.039 | −2.2 | 0.68 | 1.83 | − |
| 6388 | 0.067 | −0.5 | 0.6 | 1.14 | 0.65 |
| 6397 | 0.008 | −2.0 | 0.66 | 1.38 | 0.39 |
| 6441 | 0.081 | −0.4 | 0.53 | 1.02 | − |
| 6656 | 0.041 | −1.7 | 0.81 | 1.28 | − |
| 6809 | 0.026 | −1.8 | 0.81 | 1.32 | 0.71 |
| 6838 | 0.024 | −0.7 | −0.03 | 0.9 | 0.39 |
| 7078 | 0.069 | −2.2 | 0.74 | 1.66 | 0.62 |
| 7089 | 0.052 | −1.4 | 0.71 | 0.82 | − |
Notes. Δ[N/Fe], Δ[Al/Fe], and the average [Fe/H] values are taken from the APOGEE survey (Abdurro’uf et al. 2022), Δ[Na/Fe] are taken from Carretta et al. (2009a,b), and ΔY (the maximum spread of He) is taken from Milone et al. (2018). Δ[N/Fe], Δ[Al/Fe], and Δ[Na/Fe] were calculated using equation (3), and they are further discussed in Section 5.
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