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Table 1

Parameters of the Galactic single WN stars.

WR Spectral subtype T* log Rt v∞ XH Eb−v Law (a) D M (c) Mv R* log Ṁ (d) log L M (e)
(kK) (R⊙) (km s−1) (%) (mag) RV (mag) (mag) (R⊙) (M⊙ yr−1) (L⊙) (M⊙)
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15)
1 WN4-s 112.2 0.3 1900 0 0.67 S 12.5 G −4.74 2.26 −4.3 5.88 5.6 27
                           
2 WN2-w 141.3 0.5 1800 0 0.44 C 3.0 12.0 →−2.43 0.89 −5.3 5.45 1.7 16
                           
3 WN3h-w 89.1 1.2 2700 20 0.35 C 3.4 12.3 g −3.13 2.48 −5.4 5.56 1.4 17 / 15
                           
6 WN4-s 89.1 0.3 1700 0 0.12 S 11.8 g −5.33 3.25 −4.2 5.79 9.4 23
                           
7 WN4-s 112.2 0.3 1600 0 0.53 S 13.2 G −3.62 1.26 −4.8 5.36 5.9 13
                           
10 WN5ha-w 63.1 1.2 1100 25 0.58 C 3.1 13.8 g −5.08 6.93 −5.2 5.83 0.5 25 / 23
                           
12 (b) WN8h + OB 44.7 1.0 1200 27 0.80 C 3.7 13.9 G −6.68 16.38 −4.3 5.98 3.4 31 / 30
                           
16 WN8h 44.7 0.9 650 25 0.55 C 3.4 12.1 G −6.14 11.56 −4.6 5.72 1.5 21 / 19
                           
18 WN4-s 112.2 0.3 1800 0 0.75 C 3.6 13.0 G −5.36 2.82 −4.1 6.11 5.0 38
                           
20 WN5-w 63.1 0.9 1200 0 1.28 S 14.4 G −5.06 6.89 −4.5 5.84 2.6 25
                           
21 WN5 + O4-6 – Composite spectrum –
                           
22 (b) WN7h + O9III-V 44.7 1.3 1785 44 0.35 C 3.8 11.9 G −7.17 22.65 −4.4 6.28 1.8 49 / 75
                           
24 WN6ha-w (WNL) 50.1 1.35 2160 44 0.24 C 3.1 12.8 g −7.34 21.73 −4.3 6.47 1.8 68 /114
                           
25 (b) WN6h-w+O (WNL) 50.1 1.5 2480 53 0.63 C 4.5 11.5 G −6.98 20.24 −4.6 6.38 1.2 58 / 98
                           
28 WN6(h)-w 50.1 1.2 1200 20 1.20 S 14.1 G −6.08 14.06 −4.7 6.06 1.0 35 / 35
                           
31 WN4 + O8V – Composite spectrum –
                           
34 WN5-w 63.1 0.8 1400 0 1.18 S 14.7 G −5.08 6.28 −4.5 5.75 3.8 22
                           
35 WN6h-w 56.2 0.9 1100 22 1.15 S 14.4 G −5.29 7.34 −4.7 5.69 2.0 20 / 18
                           
36 WN5-s 89.1 0.2 1900 0 1.00 S 13.9 G −4.44 1.79 −4.3 5.30 23.6 12
                           
37 WN4-s 100.0 0.4 2150 0 1.63 S 14.6 g −5.20 3.37 −4.2 6.05 6.1 34
                           
40 WN8h 44.7 0.7 650 23 0.40 C 3.4 13.0 G −6.88 14.51 −4.2 5.91 2.5 28 / 26
                           
44 WN4-w 79.4 0.8 1400 0 0.62 C 3.6 14.1 G −4.02 3.37 −4.9 5.62 1.9 18
                           
46 WN3p-w 112.2 0.8 2300 0 0.30 F 3.6 12.1 g −2.56 1.36 −5.4 5.42 1.8 14
                           
47 WN6 + O5V – Composite spectrum –
                           
49 WN5(h)-w 56.2 1.0 1450 25 0.80 S 15.0 G −4.45 5.20 −5.0 5.40 2.8 14
                           
51 WN4-w 70.8 0.9 1500 0 1.40 S 12.9 g −3.85 3.72 −5.0 5.50 2.3 16
                           
54 WN5-w 63.1 0.9 1500 0 0.82 S 14.3 G −4.63 5.65 −4.7 5.67 2.8 20
                           
55 WN7 (WNE-w) 56.2 0.8 1200 0 0.65 C 3.6 12.5 G −4.67 5.23 −4.7 5.40 4.7 14
                           
61 WN5-w 63.1 0.7 1400 0 0.55 C 2.9 13.8 G −3.53 2.75 −5.0 5.03 6.8 9
                           
62 WN6-s 70.8 0.4 1800 0 1.73 S 13.5 g −6.34 6.32 −3.8 5.96 14.8 30
                           
63 WN7 (WNE-w) 44.7 1.1 1700 0 1.54 C 3.1 12.2 ←−5.67 11.2 −4.6 5.65 5.3 20
                           
66 WN8(h) 44.7 0.9 1500 5 1.00 S 14.8 ←−7.22 19.9 −3.9 6.15 6.2 41
                           
67 WN6-w 56.2 0.8 1500 0 1.05 S 11.9 G −4.03 3.73 −4.8 5.11 8.7 9
                           
71 WN6-w 56.2 0.9 1200 − 0.38 F 2.5 12.5 g −3.59 3.56 −5.1 5.06 3.7 9
                           
74 WN7 (WNE-w) 56.2 0.7 1300 0 1.50 S 13.6 G −5.79 6.91 −4.4 5.65 5.6 19
                           
75 WN6-s 63.1 0.6 2300 0 0.93 S 12.7 G −5.30 5.20 −4.2 5.59 19.2 18
                           
78 WN7h 50.1 1.0 1385 11 0.47 S 10.5 G −5.83 10.14 −4.5 5.80 3.4 24 / 22
                           
82 WN7(h) 56.2 0.7 1100 20 1.00 S 12.9 G −4.63 4.24 −4.8 5.26 4.9 11
                           
84 WN7 (WNE-w) 50.1 0.9 1100 0 1.45 S 12.6 G −4.95 6.30 −4.8 5.36 3.6 13
                           
85 WN6h-w (WNL) 50.1 1.1 1400 40 0.82 C 3.5 11.5 G −4.66 6.46 −5.0 5.38 3.1 13
                           
87 WN7h 44.7 1.3 1400 40 1.70 S 12.6 g −6.95 20.34 −4.5 6.21 1.3 44 / 59
                           
89 WN8h 39.8 1.4 1600 20 1.58 S 12.6 G −7.56 30.04 −4.4 6.33 1.5 53 / 87
                           
91 WN7 (WNE-s) 70.8 0.4 1700 0 2.12 S 13.6 g −6.11 6.13 −3.9 5.93 13.5 29
                           
94 WN5-w 56.2 0.9 1300 − 1.49 C 3.4 9.9 G −4.25 6.01 −4.8 5.52 3.4 16
                           
100 WN7 (WNE-s) 79.4 0.3 1600 0 1.50 S 13.0 G −5.71 3.97 −4.1 5.77 11.0 23
                           
105 WN9h 35.5 1.1 800 17 2.15 S 11.2 g −7.13 23.32 −4.4 5.89 1.9 27 / 25
                           
107 WN8 50.1 0.8 1200 − 1.41 C 3.7 14.6 ←−7.22 16.7 −4.0 6.2 3.9 44
                           
108 WN9h 39.8 1.4 1170 27 1.00 S 12.3 G −6.26 16.07 −4.9 5.77 1.3 23 / 21
                           
110 WN5-s 70.8 0.5 2300 0 0.90 C 3.5 11.0 G −4.85 3.73 −4.2 5.51 23.1 16
                           
115 WN6-w 50.1 0.9 1280 0 1.50 S 11.5 →−5.33 8.89 −4.5 5.65 4.3 20
                           
116 WN8h 39.8 0.8 800 10 1.75 S 12.0 G −5.81 10.97 −4.4 5.44 5.5 14
                           
120 WN7 (WNE-w) 50.1 0.8 1225 0 1.25 S 11.0 g −3.81 3.78 −4.9 4.92 8.9 7
                           
123 WN8 (WNE-w) 44.7 0.7 970 0 0.75 C 2.8 13.8 G −5.28 6.97 −4.6 5.28 6.7 12
                           
124 WN8h 44.7 0.7 710 13 1.08 C 2.9 14.0 G −6.58 11.93 −4.3 5.75 3.2 22 / 20
                           
127 WN3 + O9.5V – Composite spectrum –
                           
128 WN4(h)-w 70.8 1.1 2050 16 0.32 C 3.6 12.3 g −3.27 2.69 −5.4 5.22 2.6 11
                           
129 WN4-w 63.1 0.9 1320 0 0.85 S 13.9 G −4.10 4.17 −5.0 5.40 2.4 14
                           
130 WN8(h) 44.7 1.0 1000 12 1.46 S 13.8 ←−7.22 22.1 −4.2 6.25 1.8 47
                           
131 WN7h 44.7 1.3 1400 20 1.15 S 14.5 G −6.82 19.12 −4.5 6.14 1.5 39 / 44
                           
133 WN5 + O9I – Composite spectrum –
                           
134 WN6-s 63.1 0.7 1700 0 0.47 C 3.4 11.2 G −5.09 5.25 −4.4 5.61 8.3 18
                           
136 WN6(h)-s 70.8 0.5 1600 12 0.45 S 11.4 G −5.63 5.10 −4.2 5.78 8.0 23 / 21
                           
138 WN5-w + B? – Composite spectrum –
                           
139 WN5 + O6II-V – Composite spectrum –
                           
141 WN5-w +O5V-III – Composite spectrum –
                           
147 WN8(h) + B0.5V 39.8 0.9 1000 5 2.85 S 10.4 ←−7.22 29.8 −3.8 6.3 3.6 51
                           
148 (b) WN8h + B3IV/BH 39.8 1.3 1000 15 0.83 C 3.0 14.4 ← -7.22 26.5 −4.5 6.2 1.0 44
                           
149 WN5-s 63.1 0.7 1300 0 1.42 S 13.5 g −4.65 4.27 −4.6 5.43 5.5 14
                           
151 WN4 + O5V – Composite spectrum –
                           
152 WN3(h)-w 79.4 1.1 2000 13 0.50 C 3.2 13.3 G −3.74 3.63 −5.2 5.68 1.4 20 / 18
                           
155 WN6 + O9II-Ib – Composite spectrum –
                           
156 WN8h 39.8 1.1 660 27 1.22 S 13.1 G −7.00 20.81 −4.6 6.01 0.9 32 / 32
                           
157 WN5-w (+B1II) – Composite spectrum –
                           
158 WN7h + Be? 44.7 1.2 900 30 1.08 S 13.6 G −6.49 17.85 −4.7 6.06 0.7 35 / 35

Notes. (a) Applied reddening law: S = Seaton (Seaton 1979), C = Cardelli et al. (Cardelli et al. 1989), F = Fitzpatrick (Fitzpatrick 1999); for the last two, the given number is the adopted RV. (b) Binary system in which the non-WR component contributes more than 15% of the flux in the visual. (c) A letter “G” following this column indicates that the distance is based on a Gaia parallax; a lower case “g” indicates that this measurement is flagged because of significant astrometric excess noise. (d) Mass-loss rates are for an adopted clumping factor of D = 4. (e) Current stellar mass from an M–L relation for homogeneous helium stars; if a second value is given, the latter is derived from an M–L relation for WNL stars based on evolutionary tracks (see text)

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