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Table 2
Parameters of the sample stars.
| Star | Spectral | Teff | log g | log gc | V sin i | vmac | He/H | C/H | N/H | O/H |
| type | [kK] | [km s-1] | [km s-1] | [10-4] | [10-4] | [10-4] | ||||
|
|
||||||||||
| HD 12323 | ON9.2 V | 33.5 | 4.00 | 4.01 | 130 | − | 0.16 |
<0.3 | 3.5 |
2.5 |
| HD 13268 | ON9.5 IIIn | 32 | 3.50 | 3.63 | 310 | − | 0.20±0.10 | <0.5 | 5.0 |
3.1 |
| HD 14633 | ON8.5 V | 34 | 3.80 | 3.81 | 100 | 120 | 0.13 |
<0.3 | 5.2 |
1.7 |
| HD 48279 | ON8.5 V | 34.5 | 3.80 | 3.82 | 137 | 50 | 0.16±0.05 | 0.65 |
4.6 |
4.3 |
| HD 91651 | ON9.5 IIIn | 31 | 3.50 | 3.62 | 310 | − | 0.14 |
<0.5 | 5.4 |
2.3 |
| HD 102415 | ON9 IIInn | 31 | 3.50 | 3.70 | 376 | − | 0.21±0.10 | <0.6 | 7.6 |
<3.0 |
| HD 117490 | ON9.5 IIInn | 30.5 | 3.50 | 3.66 | 375 | − | 0.16 |
<0.3 | 7.6 |
2.5 |
| HD 123008 | ON9.2 Iab | 30 | 3.10 | 3.10 | 37 | 100 | 0.21 |
0.22 |
13.5 |
4.8 |
| HD 150574 | ON9 III(n) | 31 | 3.40 | 3.49 | 240 | − | 0.23±0.06 | <0.5 | >10.0 | 6.0 |
| HD 191423 | ON9 II-IIInn | 31.5 | 3.50 | 3.72 | 445 | − | 0.25±0.08 | − | >5.0 | − |
| HD 191781 | ON9.7 Iab | 28 | 3.10 | 3.12 | 107 | 70 | 0.25 |
<0.5 | 7.3 |
3.1 |
| HD 201345 | ON9.2 IV | 34 | 4.00 | 4.01 | 95 | 60 | 0.1 | <0.4 | 4.0 |
3.6 |
Notes. Uncertainties on Teff, log g, V sin i and vmac are ~1.5 kK, 0.15 dex, 10, and 20 km s-1 respectively. log gc is the surface gravity corrected for centrifugal acceleration. Abundances are number ratios.
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