Table 3.
Adopted effective temperature–spectral type calibration.
| Spectral type | Effective temperature |
||
|---|---|---|---|
| I | III | V | |
| O5 | – | – | 45200 (M) |
| O6 | – | – | 42970 (M) |
| O7 | – | – | 40730 (M) |
| O8 | – | – | 38500 (M) |
| O9 | – | – | 36265 (M) |
| O9.5 | – | – | 35150 (M) |
| B0 | 27200 (T) | – | 32000 (T) |
| B0.2 | 25750 (T) | – | 30800 (T) |
| B0.5 | 24300 (T) | – | 29650 (T) |
| B0.7 | 22850 (T) | 25300 (T) | 28450 (T) |
| B1 | 22350 (T) | 23950 (T) | 27300 (T) |
| B1.5 | 20650 (T) | 22550 (T) | 26100 (T) |
| B2 | 18950 (T) | 21200 (T) | 24950 (T) |
| B2.5 | 17200 (T) | 19850 (T) | 23900 (E) |
| B3 | 15500 (T) | 18450 (T) | 21500 (E) |
| B5 | 13800 (T) | – | – |
Notes. The calibration for O-type dwarfs was assumed to be linear and was derived from fitting the results from Mokiem et al. (2006, M). The B-type values were primarily from Trundle et al. (2007, T) and extended by scaling from Galactic and LMC estimates from Trundle et al. (E).
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