Table 4
Derived stellar properties of the sample stars.
| Source | ST | Teff |
|
log (g) | log (ṀUV) | f∞ | v∞ | V sin i | vmac | Mevol | Mspec | N/H | log (Q0) | ||||
| [kK] | [km s-1] | [km s-1] | [km s-1] | [M⊙] | [M⊙] | [× 104] | |||||||||||
|
|
|||||||||||||||||
| NGC 2244 | |||||||||||||||||
| HD 46223 | O4V((f)) | 43.0 | 5.60 ± 0.11 | 4.01 | −7.17 | 0.1 | 2800 | 100 | 32 |
|
48.3 ± 19.3 | 7.0 ± 2.0 | 49.40 | ||||
| HD 46150 | O5V((f))z | 42.0 | <5.65 | 4.01 | −7.30 | 0.1 | 2800 | 100 | 37 | <53.6 | 59.5 ± 23.7 | 3.0 ± 2.0 | 49.36 | ||||
| HD 46485 | O7Vn | 36.0 | 5.05 ± 0.11 | 3.85 | −7.80 | 1.0 | 1850 | 300 | – |
|
19.5 ± 7.9 | ≤ 1.2 | 48.62 | ||||
| HD 46056 | O8Vn | 34.5 | 4.85 ± 0.12 | 3.89 | −8.50 | 1.0 | 1500 | 330 | – |
|
15.8 ± 6.7 | ≤0.6 | 48.32 | ||||
| HD 46149-1 | O8V | 37.0 | 4.90 ± 0.12 | 4.25 | <−9.0 | 1300 | ~ 0 | 24 |
|
30.9 ± 21.6 | 0.8 ± 0.5 | 48.42 | |||||
| HD 46149-2 | O8.5–9V | 35.0 | 4.65 ± 0.16 | 4.01 | – | – | – | 100 | 27 |
|
12.5 ± 10.1 | 0.8 ± 0.5 | 48.10 | ||||
| HD 46202 | O9.5V | 33.5 | 4.85 ± 0.12 | 4.10 | −9.0 | 1.0 | 1200 | 20 | 17 |
|
29.0 ± 12.4 | 1.0 ± 0.5 | 48.19 | ||||
|
|
|||||||||||||||||
| Mon OB2 | |||||||||||||||||
| HD 46573 | O7V((f))z | 36.5 | <5.20 | 3.75 | – | – | – | 20 | 43 | <32.5 | 20.6 ± 8.3 | 3.0 ± 1.0 | 48.84 | ||||
| HD 48279 | ON8.5V | 34.5 | 4.95 ± 0.11 | 3.77 | −8.8 | 1.0 | 1300 | 125 | 22 |
|
15.2 ± 6.1 | 5.0 ± 3.0 | 48.47 | ||||
| HD 46966 | O8.5IV | 35.0 | 5.20 ± 0.11 | 3.75 | −8.0 | 1.0 | 2300 | 50 | 27 |
|
24.5 ± 9.9 | 1.2 ± 0.5 | 48.70 | ||||
| HD 48099-1a | O5.5V((f)) | 44.0 | 5.65 ± 0.07 | 4.50 | −7.60 | 0.01 | 2800 | 91 | 0 |
|
155.0 ± 98.7 | 5.0 ± 2.5 | 49.36 | ||||
| HD 48099-2a | O9V | 32.0 | 4.60 ± 0.06 | 3.51 | – | – | – | 51 | 0 |
|
5.0 ± 3.5 | 0.6 ± 0.3 | 47.93 | ||||
Notes. The columns give name, spectral type, effective temperature (uncertainty 1000 K except for HD 46149–1/HD 48099–1, 2000 K and HD 46149–2/HD 48099–2, 3000 K), luminosity, effective gravity (uncertainty 0.1 dex, except for HD 46149 and HD 48099, 0.2 dex), UV mass-loss rate, terminal velocity, projected rotational velocity, macroturbulent velocity, evolutionary mass, spectroscopic mass, nitrogen content, ionizing flux. Spectroscopic masses are computed from the true gravity (i.e. log g corrected from the effect of centrifugal force).
From Mahy et al. (2010), except that the error bars on Teff and log g are similar to HD 46149 (see text for discussion).
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