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Table 4
Spectroscopic data for brighter Westerlund 2 members.
| MSP | V | B − V | U − B | Sp.T. | E B − V | E U − B | V − MV |
|
|
|||||||
| 18 | 12.79 | 1.32 | –0.17 | O3 III((f)) | 1.65 | 1.03 | 18.69 |
| 32 | 15.35 | 1.35 | –0.11 | O9.5 V | 1.65 | 0.99 | 18.45a |
| 44 | 16.00 | 1.65 | +0.08 | B1 V | 1.92 | 1.05 | ··· |
| 151 | 14.24 | 1.50 | –0.11 | O5 V((f)) | 1.83 | 1.07 | 19.34 |
| 157 | 14.08 | 1.45 | –0.03 | O6 V((f)) | 1.78 | 1.15 | 19.08 |
| 167 | 14.08 | 1.64 | –0.09 | O4 III(f) | 1.97 | 1.10 | 19.88 |
| 171 | 14.30 | 1.65 | +0.03 | O3 V((f)) | 1.98 | 1.23 | 19.70 |
| 175 | 13.86 | 1.33 | –0.03 | O4 V((f)) | 1.66 | 1.16 | 19.06 |
| 182 | 14.28 | 1.46 | –0.07 | O3 V((f)) | 1.79 | 1.13 | 19.68 |
| 183 | 13.48 | 1.70 | +0.05 | O2 V(f*) | 2.03 | 1.25 | 20.08b |
| 188 | 13.27 | 1.49 | –0.06 | O4 III | 1.82 | 1.13 | 19.68 |
| 196a | 15.77 | 1.53 | –0.03 | O8.5 V | 1.84 | 1.10 | 19.27a |
| 199 | 14.23 | 1.55 | +0.02 | O3 V((f)) | 1.88 | 1.22 | 19.63 |
| 203 | 13.20 | 1.52 | –0.06 | O3 V((f))n | 1.85 | 1.14 | 19.10b |
| 219 | 16.31 | 1.45 | +0.33 | O9.5 V | 1.75 | ··· | 19.41a |
| 229a | 15.45 | 1.67 | +0.00 | O8 V | 1.98 | 1.13 | 19.85 |
| 233 | 15.93 | 1.59 | –0.07 | O9.5 V | 1.89 | 1.03 | 19.41 |
| 235 | 16.36 | 1.79 | +0.11 | O9.5 V | 2.09 | 1.21 | 20.36 |
| 263 | 14.79 | 1.85 | +0.14 | O3 V((f)) | 2.18 | 1.34 | 20.69b |
| 444a | 13.20 | 1.52 | –0.06 | O4.5 V | 1.85 | 1.13 | 19.55b |
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