Table 1
Empirical stellar and wind parameters for single H-free WN stars in the Galaxy.
| ID | log (L) | T⋆ | R⋆ | M | log (Ṁ) | ν∞ | νesc | ν∞/ νesc | η |
|
||||||||
| WR | (L⊙) | (kK) | (R⊙) | (M⊙) | ( M⊙ yr-1) | ( km s-1) | ( km s-1) | ( km s-1) | ||||||||||
|
|
||||||||||||||||||
| 001 | 5.40 | 112.2 | 1.33 | 13.70 | –4.88 | 1900 | 1952 | 0.97 | 4.85 | 2223 | ||||||||
| 002 | 5.45 | 141.3 | 0.89 | 14.57 | –5.47 | 1800 | 2461 | 0.73 | 1.06 | 2936 | ||||||||
| 006 | 5.60 | 89.1 | 2.66 | 17.64 | –4.48 | 1700 | 1567 | 1.09 | 6.92 | 2251 | ||||||||
| 046 | 5.80 | 112.2 | 2.11 | 23.08 | –5.25 | 2300 | 2013 | 1.14 | 1.00 | 2637 | ||||||||
| 067 | 5.40 | 56.2 | 5.30 | 13.70 | –4.84 | 1500 | 971 | 1.54 | 4.28 | |||||||||
| 074 | 5.40 | 56.2 | 5.30 | 13.70 | –4.75 | 1300 | 971 | 1.34 | 4.54 | |||||||||
| 075 | 5.70 | 63.1 | 5.94 | 20.13 | –4.28 | 2300 | 1118 | 2.06 | 11.94 | 2280 | ||||||||
| 115 | 5.65 | 50.1 | 8.90 | 18.83 | –4.72 | 1280 | 877 | 1.46 | 2.70 | |||||||||
| 120 | 5.60 | 50.1 | 8.40 | 17.64 | –4.62 | 1225 | 874 | 1.40 | 3.59 | |||||||||
| 134 | 5.60 | 63.1 | 5.29 | 17.64 | –4.63 | 1700 | 1106 | 1.54 | 4.89 | 2107 | ||||||||
|
|
||||||||||||||||||
| 007 | 5.45 | 112.2 | 1.41 | 14.57 | –4.92 | 1600 | 1953 | 0.82 | 3.34 | 2474 | ||||||||
| 018 | 5.50 | 112.2 | 1.49 | 15.51 | –4.83 | 1800 | 1960 | 0.92 | 4.11 | 2472 | ||||||||
| 020 | 5.60 | 63.1 | 5.29 | 17.64 | –4.96 | 1600 | 1104 | 1.45 | 2.17 | |||||||||
| 034 | 5.50 | 63.1 | 4.72 | 15.51 | –4.94 | 1400 | 1096 | 1.28 | 2.49 | |||||||||
| 036 | 5.30 | 89.1 | 1.88 | 12.14 | –4.51 | 1900 | 1546 | 1.23 | 14.50 | |||||||||
| 037 | 5.50 | 100.0 | 1.88 | 15.51 | –4.75 | 2150 | 1749 | 1.23 | 5.87 | |||||||||
| 044 | 5.55 | 79.4 | 3.16 | 16.53 | –5.20 | 1400 | 1385 | 1.01 | 1.21 | 2018 | ||||||||
| 051 | 5.50 | 70.8 | 3.75 | 15.51 | –5.21 | 1500 | 1231 | 1.22 | 1.43 | |||||||||
| 054 | 5.60 | 63.1 | 5.29 | 17.64 | –4.99 | 1500 | 1103 | 1.36 | 1.91 | |||||||||
| 055 | 5.80 | 56.2 | 8.40 | 23.08 | –4.63 | 1200 | 1001 | 1.20 | 2.18 | 1675 | ||||||||
| 061 | 5.40 | 63.1 | 4.21 | 13.70 | –4.87 | 1400 | 1092 | 1.28 | 3.72 | 1825 | ||||||||
| 062 | 5.45 | 70.8 | 3.54 | 14.57 | –4.42 | 1800 | 1233 | 1.46 | 11.93 | |||||||||
| 063 | 5.65 | 44.7 | 11.17 | 18.83 | –4.75 | 1700 | 781 | 2.18 | 3.36 | |||||||||
| 084 | 5.65 | 50.1 | 8.90 | 18.83 | –4.78 | 1100 | 876 | 1.26 | 1.99 | |||||||||
| 091 | 5.75 | 70.8 | 5.00 | 21.54 | –4.22 | 1700 | 1262 | 1.35 | 8.95 | |||||||||
| 100 | 5.75 | 79.4 | 3.97 | 21.54 | –4.25 | 1600 | 1415 | 1.13 | 7.94 | |||||||||
| 110 | 5.35 | 70.8 | 3.15 | 12.89 | –4.54 | 2300 | 1229 | 1.87 | 14.60 | 2410 | ||||||||
| 123 | 6.05 | 44.7 | 17.71 | 33.24 | –4.09 | 970 | 826 | 1.17 | 3.46 | 1445 | ||||||||
| 129 | 5.30 | 63.1 | 3.75 | 12.14 | –5.27 | 1320 | 1086 | 1.22 | 1.76 | |||||||||
| 149 | 5.35 | 63.1 | 3.97 | 12.89 | –4.94 | 1300 | 1089 | 1.19 | 3.30 | |||||||||
Notes. The indicated values are adopted from Hamann et al. (2006), with terminal wind velocities from Niedzielski & Skorzynski (2002), Niedzielski et al. (2004). The luminosities of the stars in the upper part are derived using known distances from cluster membership. The luminosities of the stars in the lower part are estimated based on the Mv vs. spectral type calibration from Hamann et al. (2006), and thus more uncertain. The mass-loss rates have been scaled down with 
to match an adopted clumping factor of D = 10. In the original work, D = 4 was adopted. Masses are derived from the observed luminosities using the M(L) relations for He stars from Gräfener et al. (2011).
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