1994A&A...287..835S

Query : 1994A&A...287..835S

1994A&A...287..835S - Astronomy and Astrophysics, volume 287835-842 (1994/7-3)

Improved bolometric corrections for WR stars from cluster membership and evolutionary models.

SMITH L.F., MEYNET G. and MERMILLIOD J.-C.

Abstract (from CDS):

Evolutionary models allow an assignment of both a mass and a luminosity to a Wolf-Rayet (WR) star in a cluster, and hence allow a determination of the Bolometric Correction (B.C.). We plot all cluster WR stars in the Mv,logM/M☉ diagram of Smith & Maeder (1989); this more than doubles the number of stars and extends the subclasses represented to include WN4.5, WC9 and WO2. The same method applied to WR stars in associations yields large uncertainties but includes useful limits on subclasses not represented in clusters: WN2, 3 and 8 and WC 5 and 6. The increased sample and expanded subclass range give a discrimination in the B.C. that was not previously possible. The B.C.'s derived for WN stars range from -4.0 to -6.0 with the expected trend of larger values for stars with higher excitation spectra. For WC stars, there is little evidence for a similar trend; most observations presented here are consistent with B.C.=-4.5, as before. The convergence of B.C. values derived from evolutionary and atmospheric models is extremely satisfactory, giving increased confidence in both methods.

Abstract Copyright: ∼

Journal keyword(s): stars: Wolf-Rayet - atmospheres - fundamental parameters

Simbad objects: 74

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Number of rows : 74
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 4004 WR* 00 43 28.3971737448 +64 45 35.384652468 10.28 10.718 10.138     WN4-s 205 0
2 Ass Cas OB 7 As* 00 50 14 +64 04.3           ~ 65 0
3 Ass Cas OB 1 As* 01 00 +61.5           ~ 44 0
4 HD 6327 WR* 01 05 23.0309242057 +60 25 18.900677036   11.49 11.33     WN2-w 122 0
5 HD 62910 WR* 07 44 58.2217347768 -31 54 29.554957188 10.08 10.44 10.10 10.17   WN6/WC4 134 0
6 Cl Ruprecht 44 OpC 07 58 49.6 -28 33 44   7.66 7.2     ~ 65 0
7 HD 65865 WR* 07 59 46.2451717872 -28 44 03.085045476 10.62 11.20 10.90 11.16   WN5h 108 0
8 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 307 0
9 * gam02 Vel WR* 08 09 31.95013 -47 20 11.7108 0.64 1.58 1.83 1.85 2.00 WC8+O7.5III-V 951 0
10 HD 76536 WR* 08 54 59.1670918944 -47 35 32.662167792 9.04 9.13 8.80 9.52   WC 129 0
11 Ass Car OB 1 As* 10 38 -59.0           ~ 172 0
12 HD 92740 WR* 10 41 17.5158425712 -59 40 36.895992960 5.68 6.50 6.42 7.38   WN7h+O9III-V 426 0
13 HD 92809 WR* 10 41 38.3243333544 -58 46 18.723223308 8.95 9.28 9.03 9.60   WC6 163 0
14 HD 93131 WR* 10 43 52.2579213120 -60 07 04.019676456 5.52 6.43 6.48 7.46   WN6ha-w 309 0
15 Cl Collinder 228 OpC 10 44 00 -60 05.2           ~ 211 0
16 HD 93162 WR* 10 44 10.3890266112 -59 43 11.106500520 7.90 8.55 8.80 8.66   O2.5If*/WN6+OB 374 0
17 Cl Trumpler 16 OpC 10 45 01.9 -59 42 00           ~ 510 0
18 NAME Cha T Association As* 11 10 16.7 -76 42 03           ~ 42 1
19 NGC 3603 OpC 11 14 57.9 -61 14 32           ~ 1136 1
20 HD 97950 Cl* 11 15 07.346 -61 15 38.52 9.64 9.83 9.03 9.69   ~ 198 2
21 Cl Hogg 15 OpC 12 43 36.8 -63 06 01           ~ 61 0
22 HD 311884 WR* 12 43 50.9991209208 -63 05 14.812489320 11.45 11.64 10.81 10.59   WN6+O5V 175 0
23 Ass Cha T 2 As* 13 00 50.7 -77 34 26           ~ 19 1
24 Ass Cen OB 1 As* 13 02 -61.4           ~ 107 0
25 * tet Mus WR* 13 08 07.1531705448 -65 18 21.679426548 4.71 5.50 5.53 5.44 5.40 WC5+B0III 336 0
26 WR 48a WR* 13 12 39.6052790136 -62 42 55.939362876       16.081   WC6 106 0
27 CPD-61 3569 WR* 13 18 01.0421567664 -62 26 04.755661116 12.66 12.64 11.88 11.84   WC7+OB 64 0
28 MR 45 WR* 13 18 23.3593835760 -62 28 21.220535604   15.53 14.32 13.97   WN4-w 48 0
29 Cl Pismis 20 OpC 15 15 23.5 -59 04 23   8.69 7.8     ~ 103 0
30 MR 55 WR* 15 15 32.6272277376 -59 02 30.695283672 12.46 12.56 11.84 11.63   WN6-w 72 0
31 HD 151932 WR* 16 52 19.2477039480 -41 51 16.270066224 6.06 6.79 6.51 7.64   WN7h 326 0
32 NGC 6231 OpC 16 54 14.4 -41 48 53           ~ 562 0
33 HD 152270 WR* 16 54 19.6991292072 -41 49 11.531710092 6.26 6.80 6.597 6.72 6.39 WC7+O5-8 315 0
34 WRAY 15-1666 WR* 17 18 52.8750705984 -38 50 03.606746928 13.93 13.27 11.83 11.43   WN7 79 0
35 CD-38 11746 WR* 17 19 00.5232022104 -38 48 51.247595664 13.01 12.48 11.02 10.55   WN8h 106 0
36 Cl Pismis 24 OpC 17 24 43.0 -34 12 23           ~ 130 0
37 HD 157504 WR* 17 25 08.8532916336 -34 11 12.498318168 12.80 12.10 10.68 10.39 11.546 WC7+O7-9 121 0
38 MR 74 WR* 17 36 19.8953017656 -33 26 12.271864344 16.01 14.87 13.18 12.99   WC9 93 1
39 Cl Trumpler 27 OpC 17 36 20 -33 31.0   8.24 6.7     ~ 100 1
40 MR 80 WR* 18 02 04.1244400656 -23 37 42.168277056   15.002 13.155 12.056   WC9 241 1
41 EM* AS 268 WR* 18 02 23.4574037952 -23 34 37.491692196   14.38 12.31 11.43   WN9h 106 0
42 Ass Sgr OB 1 As* 18 06 -22.8           ~ 128 0
43 HD 165763 WR* 18 08 28.4692108104 -21 15 11.183076540 7.16 7.54 7.82 8.55   WC6 286 0
44 Ass Ser OB 2 As* 18 18 -12.3           ~ 65 0
45 HD 168206 WR* 18 19 07.3629298440 -11 37 59.164994424 9.65 9.88 9.10     WC8+O8/9III/V 308 1
46 Ass Ser OB 1 As* 18 21 -14.4           ~ 76 0
47 HD 169010 WR* 18 23 16.3427231112 -13 43 26.102574732 13.53 12.99 12.02 11.95   WC 82 0
48 MR 87 WR* 18 25 30.0135261024 -14 38 40.967308176 13.38 13.09 11.86 11.33   WN6-w 84 0
49 HD 186943 WR* 19 46 15.9393580368 +28 16 19.077099276 9.86 10.50 10.23     WN3+O9.5V 192 0
50 Ass Vul OB 2 As* 19 47.6 +28 49           ~ 28 0
51 HD 190918 WR* 20 05 57.3244526328 +35 47 18.150756792 6.11 6.88 6.75     WN5+O9I 385 0
52 NGC 6871 OpC 20 06 07.9 +35 46 45   5.43 5.2     ~ 237 0
53 Ass Cyg OB 3 As* 20 07 +35.9           ~ 190 0
54 HD 191765 WR* 20 10 14.1928045152 +36 10 35.070683376 7.64 8.08 8.08     WN6-s 452 0
55 HD 192103 WR* 20 11 53.5274337792 +36 11 50.525765304 7.77 8.13 8.11     WC8+OB: 339 0
56 HD 192163 WR* 20 12 06.5418877464 +38 21 17.784181008 7.12 7.49 7.50     WN6(h)-s 715 1
57 HD 192641 WR* 20 14 31.7666855880 +36 39 39.598210224 7.80 8.20 7.91     WC7pd+O9V 347 0
58 HD 193077 WR* 20 17 00.0260987184 +37 25 23.785483116 7.82 8.32 8.01 8.71   WN5o+B? 297 0
59 Ass Cyg OB 1 As* 20 17.8 +37 38           ~ 270 1
60 HD 193576 WR* 20 19 32.4229160448 +38 43 53.959035756 8.15 8.53 8.00     WN5+O6II-V 721 0
61 Cl Berkeley 86 OpC 20 20 20.6 +38 42 15           ~ 130 0
62 HD 193928 WR* 20 21 31.7290073688 +36 55 12.773070696 10.67 10.60 9.78     WN5-w+O5V-III 205 0
63 Cl Berkeley 87 OpC 20 21 35.0 +37 25 14           ~ 141 0
64 WR 142 WR* 20 21 44.3438785440 +37 22 30.544989960   14.39 12.99 12.73 11.04 WO2 134 0
65 EM* AS 422 WR* 20 32 06.2786571432 +40 48 29.527101576   13.46 11.83     WN7o/CE+O7V(f) 107 0
66 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
67 HD 211564 WR* 22 16 24.0318845736 +55 37 36.767570232   11.72 11.61     WN3(h)-w 123 0
68 HD 211853 WR* 22 18 45.6057566664 +56 07 33.898679364 8.84 9.534 9.236 9.108   WN6o+O6I 283 0
69 HD 213049 WR* 22 27 17.8187635824 +56 15 11.770681752   11.270 10.928 10.922   WC6 93 0
70 Ass Cep OB 1 As* 22 29 +56.6           ~ 91 0
71 HD 214419 WR* 22 36 53.9548302648 +56 54 20.989190232 8.68 9.376 8.996 8.962   WN6o+O9Ib/II 385 1
72 HD 219460 ** 23 15 12.39033 +60 27 01.8129 10.23 10.51 9.89 9.563   B1II+WN4.5 135 0
73 HD 219460A * 23 15 12.3995306290 +60 27 01.845560649   10.97 10.57     B0.7II 128 0
74 Cl Mrk 50 OpC 23 15 14.5 +60 26 25   9.09 8.5     ~ 56 0

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