2006A&A...457.1015H


C.D.S. - SIMBAD4 rel 1.7 - 2019.08.24CEST10:19:02

2006A&A...457.1015H - Astronomy and Astrophysics, volume 457, 1015-1031 (2006/10-3)

The Galactic WN stars. Spectral analyses with line-blanketed model atmospheres versus stellar evolution models with and without rotation.

HAMANN W.-R., GRAEFENER G. and LIERMANN A.

Abstract (from CDS):

Very massive stars pass through the Wolf-Rayet (WR) stage before they finally explode. Details of their evolution have not yet been safely established, and their physics are not well understood. Their spectral analysis requires adequate model atmospheres, which have been developed step by step during the past decades and account in their recent version for line blanketing by the millions of lines from iron and iron-group elements. However, only very few WN stars have been re-analyzed by means of line-blanketed models yet. The quantitative spectral analysis of a large sample of Galactic WN stars with the most advanced generation of model atmospheres should provide an empirical basis for various studies about the origin, evolution, and physics of the Wolf-Rayet stars and their powerful winds. We analyze a large sample of Galactic WN stars by means of the Potsdam Wolf-Rayet (PoWR) model atmospheres, which account for iron line blanketing and clumping. The results are compared with a synthetic population, generated from the Geneva tracks for massive star evolution. We obtain a homogeneous set of stellar and atmospheric parameters for the Galactic WN stars, partly revising earlier results. Comparing the results of our spectral analyses of the Galactic WN stars with the predictions of the Geneva evolutionary calculations, we conclude that there is rough qualitative agreement. However, the quantitative discrepancies are still severe, and there is no preference for the tracks that account for the effects of rotation. It seems that the evolution of massive stars is still not satisfactorily understood.

Abstract Copyright:

Journal keyword(s): stars: mass-loss - stars: winds, outflows - stars: Wolf-Rayet - stars: atmospheres - stars: early-type - stars: evolution

Simbad objects: 87

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Number of rows : 87

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 HD 4004 WR* 00 43 28.3971235391 +64 45 35.383738645 10.28 10.718 10.138     WN4-s 174 0
2 Ass Cas OB 7 As* 00 50 14 +64 04.3           ~ 58 0
3 HD 6327 WR* 01 05 23.0143603 +60 25 18.965197   11.49 11.33     WN2-w 103 0
4 HD 9974 WR* 01 38 55.6271504593 +58 09 22.671823428 9.85 10.71 10.69     WN3h-w 149 0
5 HD 50896 WR* 06 54 13.0440847499 -23 55 42.020318514 5.74 6.63 6.91 7.74   WN4b 732 0
6 HD 56925 WR* 07 18 29.1313276537 -13 13 01.513156589 11.21 11.74 11.56 11.40   WN4b 150 0
7 HD 65865 WR* 07 59 46.2452165709 -28 44 03.084742445 10.62 11.20 10.90 11.16   WN5h 93 0
8 CD-45 4482 WR* 08 44 47.2902196838 -45 58 55.414166402 10.95 11.29 10.74 10.58   WN8h+? 94 0
9 C 0843-458 OpC 08 44.8 -45 58   6.94 6.8     ~ 35 0
10 HD 86161 WR* 09 54 52.9034376427 -57 43 38.273623332 7.94 8.65 8.36 8.93   WN8h 197 0
11 HD 89358 WR* 10 17 02.2741836044 -57 54 46.871795579 11.1 11.19 10.83 10.59   WN4-s 153 1
12 WR 20 WR* 10 19 18.4020182129 -59 09 38.850146550   15.34 14.60     WN5-w 32 0
13 HD 90657 WR* 10 26 31.4088129340 -58 38 26.179161012 9.53 10.07 9.65 9.84   WN5+O4-6 139 0
14 Ass Car OB 1 As* 10 38 -59.0           ~ 136 0
15 HD 92740 WR* 10 41 17.5154230335 -59 40 36.897706569 5.68 6.50 6.42 7.38   WN7h+O9III-V 373 0
16 HD 93131 WR* 10 43 52.2575981063 -60 07 04.016913264 5.52 6.43 6.48 7.46   WN6ha-w 267 0
17 HD 93162 WR* 10 44 10.3888220947 -59 43 11.105959983 7.90 8.55 8.80 8.66   O2.5If*/WN6+OB 326 1
18 WR 28 WR* 10 48 58.7235338702 -59 03 37.303699221   13.70 12.98     WN6(h)-w 28 0
19 HD 94546 WR* 10 53 44.8196302 -59 30 46.694249 10.38 10.94 10.51 10.48   WN4+O8V 105 0
20 WR 34 WR* 11 00 06.4565379740 -61 26 30.107771412   15.26 14.50     WN5-w 29 0
21 WR 35 WR* 11 00 21.86 -61 13 52.3   14.58 13.83     WN6h-w 30 0
22 WR 36 WR* 11 02 32.9786581120 -59 26 20.908131146   13.90 12.94 12.86   WN5-s 31 0
23 WR 37 WR* 11 05 13.9025929090 -61 20 41.184951648   17.40 16.0     WN4-s 35 0
24 HD 96548 WR* 11 06 17.2033098417 -65 30 35.237611013 7.10 7.80 7.70 8.49   WN8h 384 0
25 MR 39 WR* 11 16 57.8367853584 -59 26 23.891767387   13.04 12.79 12.71   WN4-w 47 0
26 HD 104994 WR* 12 05 18.7203813373 -62 03 10.139083749 9.95 10.94 10.93 11.03   WN3p-w 149 0
27 HD 311884 WR* 12 43 50.9989169468 -63 05 14.811840934 11.45 11.64 10.81 10.59   WN6+O5V 152 0
28 Ass Cen OB 1 As* 13 02 -61.4           ~ 100 0
29 WR 49 WR* 13 13 51.3090989970 -65 18 08.897671074   13.59 13.40 13.51   WN5(h)-w 37 0
30 MR 45 WR* 13 18 23.3593856408 -62 28 21.220292118   15.53 14.32 13.97   WN4-w 43 0
31 MR 48 WR* 13 32 43.7631500403 -65 01 27.835643271 12.85 13.20 12.73 12.61   WN5-w 50 0
32 HD 117688 WR* 13 33 30.1195029290 -62 19 01.211515819 8.69 10.81 10.90 10.44   WN7 113 0
33 MR 53 WR* 14 13 03.5249088603 -65 26 52.708243005 11.93 12.51 12.32 12.21   WN5-w 62 0
34 WRAY 16-154 WR* 14 31 06.13 -61 20 59.5   15.82 14.22     WN6-s 29 1
35 Ass Cir OB 1 As* 14 45 -62.9           ~ 19 0
36 WRAY 15-1254 WR* 14 50 58.2650618251 -59 51 26.428849251 14.29 13.96 12.47 11.85   WN6 39 0
37 HD 134877 WR* 15 14 57.7490917148 -59 50 30.232117350 12.13 12.19 11.34 11.08   WN8(h) 93 0
38 MR 55 WR* 15 15 32.6263216950 -59 02 30.692489276 12.46 12.56 11.84 11.63   WN6-w 62 0
39 HD 143414 WR* 16 03 49.3451223381 -62 41 35.942835918 9.32 10.03 10.10     WN6-w 98 0
40 WR 74 WR* 16 16 13.81 -51 36 41.8   15.53 14.01     WN7 24 0
41 HD 147419 WR* 16 24 26.2278740665 -51 32 06.062121260   11.46 10.50 10.74   WN6-s 101 0
42 HD 151932 WR* 16 52 19.2478420644 -41 51 16.269632432 6.06 6.79 6.51 7.64   WN7h 288 0
43 WRAY 15-1600 WR* 17 04 04.6347450070 -45 12 15.059699813 12.95 13.00 11.55 11.85   WN7(h) 42 0
44 THA 31-1 WR* 17 11 21.7005819428 -39 53 21.977257211   14.18 13.01 12.54   WN7 35 0
45 LS 3982 WR* 17 14 27.1191115555 -39 45 47.053559348 10.63 10.95 10.41     WN6h-w 60 0
46 WRAY 15-1666 WR* 17 18 52.8750745581 -38 50 03.606959080 13.93 13.27 11.83 11.43   WN7 64 0
47 CD-38 11746 WR* 17 19 00.5230727136 -38 48 51.250086613 13.01 12.48 11.02 10.55   WN8h 87 0
48 WR 91 WR* 17 20 22.0232742995 -38 56 48.379201459   17.70 16.2     WN7 31 0
49 HD 158860 WR* 17 33 07.0669567120 -33 38 23.500757398   12.20 10.69 10.38   WN5-w 45 0
50 HD 318139 WR* 17 42 09.7605770497 -32 33 24.800534509   13.93 12.78 12.20   WN7 42 0
51 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 10884 0
52 EM* AS 268 WR* 18 02 23.4579211710 -23 34 37.481060535   14.38 12.31 11.43   WN9h 94 0
53 SS73 123 WR* 18 04 46.0977446521 -21 51 27.157890594   15.00 13.51 12.80 11.35 WN8 28 0
54 HD 313846 WR* 18 05 25.7345590489 -23 00 20.335027460 10.48 10.69 9.89 9.89   WN9h+OB 120 0
55 Ass Sgr OB 1 As* 18 06 -22.8           ~ 111 0
56 HD 165688 WR* 18 07 56.9612003141 -19 23 56.866361615 10.46 10.31 9.87 9.85   WN5-6b 139 0
57 Ass Ser OB 1 As* 18 21 -14.4           ~ 67 0
58 MR 87 WR* 18 25 30.0233828772 -14 38 41.034349989 13.38 13.09 11.86 11.33   WN6-w 69 0
59 EM* AS 306 WR* 18 27 04.2927141192 -12 22 52.681549543   14.79       WN8h 44 0
60 MR 89 WR* 18 41 00.8669826586 -04 26 14.473452479 13.1 12.97 11.93 11.67   WN7 64 2
61 Cl Dolidze 33 OpC 18 41 18.00 -04 21 37.0           ~ 11 0
62 HD 177230 WR* 19 03 59.0232385542 -04 19 01.911120922 11.32 11.60 11.12     WN8 154 0
63 Hen 2-427 WR* 19 11 30.8750511254 +16 51 38.199008052   12.19 11.50     WN8h 309 0
64 HD 186943 WR* 19 46 15.9393000440 +28 16 19.074048808 9.86 10.50 10.23     WN3+O9.5V 171 1
65 MR 96 WR* 19 48 18.2649973585 +30 26 52.670591228   13.3 13.4     WN4-w 31 0
66 HD 187282 WR* 19 48 32.1968574697 +18 12 03.693991312 9.60 10.49 10.51     WN4(h)-w 178 0
67 EM* AS 374 WR* 19 59 12.5938476816 +31 27 09.011482722   13.57 12.13 11.52   WN8(h) 58 1
68 MR 97 WR* 20 00 19.1224209318 +33 15 51.098849239 12.93 13.050 12.080     WN7h 68 0
69 HD 190918 WR* 20 05 57.3242972785 +35 47 18.153743699 6.11 6.88 6.75     WN5+O9I 334 0
70 Ass Cyg OB 3 As* 20 07 +35.9           ~ 161 0
71 HD 191765 WR* 20 10 14.1929815789 +36 10 35.069005168 7.64 8.08 8.08     WN6-s 414 0
72 HD 192163 WR* 20 12 06.5420067895 +38 21 17.783840972 7.12 7.49 7.50     WN6(h)-s 511 0
73 HD 193077 WR* 20 17 00.0264117871 +37 25 23.780238760 7.82 8.32 8.01 8.71   WN5-w+B? 274 0
74 Ass Cyg OB 1 As* 20 17.8 +37 38           ~ 237 1
75 HD 193576 WR* 20 19 32.4230196684 +38 43 53.958209968 8.15 8.53 8.00     WN5+O6II-V 678 0
76 HD 193928 WR* 20 21 31.7290292758 +36 55 12.769017074 10.67 10.60 9.78     WN5-w+O5V-III 183 0
77 EM* AS 431 WR* 20 36 43.6 +40 21 08   17.04 14.89     WN8(h)+B0.5V 201 2
78 HD 197406 WR* 20 41 21.5486849958 +52 35 15.140677138 10.42 10.87 10.30     WN8h+B3IV/BH 182 0
79 WR 149 WR* 21 07 11.6932466487 +48 25 36.238906743   15.90 14.70     WN5-s 40 0
80 MR 114 WR* 22 09 33.4427302357 +57 44 30.525316054 12.78 12.91 12.12     WN4+O5V 130 0
81 HD 211564 WR* 22 16 24.0322637172 +55 37 36.763974776   11.72 11.61     WN3(h)-w 109 0
82 Ass Cep OB 1 As* 22 29 +56.6           ~ 79 0
83 HD 214419 WR* 22 36 53.9549498582 +56 54 20.985957352 8.68 9.21 8.80     WN6+09II-Ib 356 0
84 MR 119 WR* 23 00 10.1254033879 +60 55 38.409749646 11.85 12.18 11.01     WN8h 88 0
85 HD 219460 ** 23 15 12.39033 +60 27 01.8129 10.23 10.51 9.89     B1II+WN4.5 126 0
86 HD 219460A * 23 15 12.394 +60 27 01.84   10.96 10.57     B1II 124 0
87 EM* AS 513 WR* 23 43 30.5961785796 +61 55 48.136617629 12.02 11.98 11.282     WN7h+Be? 62 0

    Equat.    Gal    SGal    Ecl

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2019.08.24-10:19:02

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