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Table 6

Best-fitting helium (Y, by mass) and CNO (ϵX, by number) abundances.

Star Y ϵC ϵN ϵO ΣCNOΣCNOSMCMathematical equation: ${{\Sigma {\rm{CNO}}} \over {\Sigma {\rm{CN}}{{\rm{O}}_{{\rm{SMC}}}}}}$ ΣCNOΣCNOMathematical equation: ${{\Sigma {\rm{CNO}}} \over {\Sigma {\rm{CN}}{{\rm{O}}_ \odot }}}$
AzV 469 0.52 7.3 8.1 8.2 2.2 0.42
AzV 372 0.52 7.2 7.8 8.2 1.7 0.33
AzV 456 0.30 7.2 7.2 8.1 1.0 0.19
AzV 327 0.46 7.2 7.8 8.1 1.3 0.24
AzV 235 0.30 7.0 7.8 7.9 1.0 0.19
AzV 215 0.30 7.0 8.0 8.1 1.6 0.31
AzV 104 0.30 7.0 7.7 8.0 1.0 0.20
AzV 410 0.37 7.1 7.7 8.0 1.1 0.22
AzV 242 0.30 7.0 7.5 8.0 1.0 0.18
AzV 96 0.30 6.7 7.9 7.8 0.9 0.18
AzV 264 0.46 6.8 7.9 7.8 1.1 0.21
AzV 175 0.30 7.1 7.5 8.1 1.1 0.21
Sk 191 0.43 6.9 7.9 8.0 1.2 0.23
AzV 18 0.43 7.1 7.7 8.0 1.1 0.22
NGC330-ELS-04 0.40 7.0 7.9 7.9 1.2 0.23
AzV 187 0.30 7.2 7.5 8.0 0.9 0.18
AzV 22 0.46 6.9 8.0 8.0 1.4 0.27
AzV 393 0.30 6.9 7.8 8.0 1.1 0.21
AzV 343 0.40 7.6 7.9 7.5* 1.1 0.20
AzV 324 0.34 7.2 7.6 7.5* 0.6 0.11
Averages 0.37 7.0 7.8 7.9 1.1 0.23

Notes. The uncertainties of the helium mass fraction are 10% . The adopted uncertainty of CNO abundances is ±0.3 dex. The last two columns represent the cumulative CNO mass fraction relative to the cumulative CNO SMC baseline and solar baseline, respectively. Oxygen abundance values with the asterisk subscript were obtained from fitting the O i λλλ7772–7774–7775 multiple, and are considered lower limits.

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