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Table 6
CNO abundances (12 + log X/H) and ratios for the SMC.
| Element | Asplund et al. (2009) | Hunter et al. (2009) | Rolleston et al. (2003) | Kurt & Dufour (1998) | Dopita et al. (2019) |
|---|---|---|---|---|---|
| scaled solar (1/5) | + Dufton et al. (2020) | B-type dwarf | H II | Supernova | |
| B stars | (AV 304) | regions | remnants | ||
| C | 7.69 | 7.30 | 7.20 | 7.16 | 7.50 |
| N | 7.08 | 7.24 | 6.66 | 6.46 | 6.82 |
| O | 7.96 | 7.99 | 8.23 | 8.02 | 8.02 |
| log(N/C) | −0.61 | −0.06 | −0.54 | −0.7 | −0.68 |
| log(N/O) | −0.88 | −0.75 | −1.57 | −1.56 | −1.2 |
Notes. The scaled Asplund et al. (2009) abundances for CNO are the baseline that we consider in the rest of the analysis as it is used in the Geneva models (but see text).
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