Table C.1.
Mass fractions adopted for the POWR model stellar atmospheres.
| Element | Mass fraction | |
|---|---|---|
| solar (Asplund et al. 2021) | stripped | |
| Hydrogen | 0.74 | 0.3 (0.001–0.7) |
| Helium | 0.24 | 0.68 (1-X-Z) |
| Nitrogen | 0.0007 | 0.007 |
| Carbon | 0.00255 | 0.00075 |
| Oxygen | 0.0058 | 0.0050 |
| Silicon | 0.00067 | 0.00066 |
| Magnesium | 0.00064 | 0.00069 |
| Iron group | 0.0012 | 0.0012 |
Notes. The solar abundances follow Asplund et al. (2021), the stripped star models are enriched in N and deficient in O and C compared to a solar composition. H and He are varied in the stripped-star grid, with He determined by Y = 1 − X − Z, we list the adopted best-fit values.
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