Table 1
Model-grid used within this work: coverage of fundamental parameters.
| Parameter | Range | Typical step size |
|
|
||
| Teff (kK) | 35.0–55.0 | 1.0 |
| log g (cgs) | 3.2, 3.5–4.2, 4.5 | 0.1 |
| log Qa/series | −14.00/A, − 13.50/B, − 13.15/C | 0.35 |
| −12.80/D, − 12.45/E, − 12.10/F | ||
| YHe | 0.08, 0.10–0.20 | 0.05 |
|
|
||
| Galactic | ||
| Z | Z⊙ | – |
| [N] | 7.64, 7.78–8.98 | 0.2 |
|
|
||
| LMC | ||
| Z | 0.5 Z⊙ | – |
| [N] | 6.90, 6.98–8.58 | 0.2 |
|
|
||
| SMC | ||
| Z | 0.2 Z⊙ | – |
| [N] | 6.50, 6.78–8.38 | 0.2 |
Notes. For Teff and log g coverage, see also asterisks in Fig. 6. Other model parameters adopted as follows: wind terminal velocity, v∞, as a function of the photospheric escape velocity, vesc (see Kudritzki & Puls 2000); stellar radius, R∗, as a function of spectral type and luminosity class, corresponding to prototypical values; velocity field exponent, β = 0.8; and micro-turbulence, vmic = 10 km s-1. Nitrogen baselines abundances (first entry in [N] range) have been drawn from Hunter et al. (2007).
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