2014MNRAS.440....2M

Query : 2014MNRAS.440....2M

2014MNRAS.440....2M - Mon. Not. R. Astron. Soc., 440, 2-9 (2014/May-1)

On the origin of variable structures in the winds of hot luminous stars.

MICHAUX Y.J.L., MOFFAT A.F.J., CHENE A.-N. and ST-LOUIS N.

Abstract (from CDS):

Examination of the temporal variability properties of several strong optical recombination lines in a large sample of Galactic Wolf-Rayet (WR) stars reveals possible trends, especially in the more homogeneous WC than the diverse WN subtypes, of increasing wind variability with cooler subtypes. This could imply that a serious contender for the driver of the variations is stochastic, magnetic subsurface convection associated with the 170 kK partial-ionization zone of iron, which should occupy a deeper and larger zone of greater mass in cooler WR subtypes. This empirical evidence suggests that the heretofore proposed ubiquitous driver of wind variability, radiative instabilities, may not be the only mechanism playing a role in the stochastic multiple small-scaled structures seen in the winds of hot luminous stars. In addition to small-scale stochastic behaviour, subsurface convection guided by a global magnetic field with localized emerging loops may also be at the origin of the large-scale corotating interaction regions as seen frequently in O stars and occasionally in the winds of their descendant WR stars.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): convection - radiative transfer - stars: evolution - stars: winds, outflows - stars: Wolf - Rayet

Simbad objects: 71

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Number of rows : 71
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 HD 6327 WR* 01 05 23.0309242057 +60 25 18.900677036   11.49 11.33     WN2-w 122 0
3 HD 9974 WR* 01 38 55.6274097096 +58 09 22.673806272 9.85 10.71 10.69     WN3h-w 173 0
4 HD 16523 WR* 02 41 11.6753354688 +56 43 49.735070148 10.03 10.025 9.881 9.901   WC6 138 0
5 HD 17638 WR* 02 52 11.6613087600 +56 56 07.131052500 10.99 10.86 10.41     WC6 121 0
6 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
7 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
8 V* V358 CMa WR* 07 20 22.3648466568 -23 43 56.522065908   15.04 14.11 13.87   WN4//WC 15 0
9 HD 62910 WR* 07 44 58.2217347768 -31 54 29.554957188 10.08 10.44 10.10 10.17   WN6/WC4 134 0
10 * J Pup s*b 07 53 18.1574768969 -48 06 10.566474468 3.11 4.10 4.24 4.26 4.38 B0.5Ib 249 0
11 HD 65865 WR* 07 59 46.2451717872 -28 44 03.085045476 10.62 11.20 10.90 11.16   WN5h 108 0
12 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1190 1
13 HD 76536 WR* 08 54 59.1670918944 -47 35 32.662167792 9.04 9.13 8.80 9.52   WC 129 0
14 HD 79573 WR* 09 13 11.7689184720 -50 06 25.523968608 12.30 11.80 10.69 10.52   WC6 87 0
15 HD 88500 WR* 10 10 31.9110817968 -60 38 42.419780376   10.84 10.65 10.67   WC5 88 0
16 HD 89358 WR* 10 17 02.2743231360 -57 54 46.875258324 11.1 11.19 10.83 10.59   WN4-s 181 1
17 THA 35-II-42 WR* 10 25 56.5024585224 -57 48 43.519215708   14.168 12.661 12.102   WN5ha/O3+O3Vz((f*)) 105 0
18 HD 92809 WR* 10 41 38.3243333544 -58 46 18.723223308 8.95 9.28 9.03 9.60   WC6 163 0
19 HD 93131 WR* 10 43 52.2579213120 -60 07 04.019676456 5.52 6.43 6.48 7.46   WN6ha-w 309 0
20 WR 28 WR* 10 48 58.7233875624 -59 03 37.305467496   13.70 12.98     WN6(h)-w 33 0
21 HD 95435 WR* 11 00 00.7205444088 -57 48 59.277614904   11.78 11.61 11.67   WC6 60 0
22 MR 39 WR* 11 16 57.8368404744 -59 26 23.893309392   13.04 12.79 12.71   WN4-w 55 0
23 CPD-61 3569 WR* 13 18 01.0421567664 -62 26 04.755661116 12.66 12.64 11.88 11.84   WC7+OB 64 0
24 HD 115473 WR* 13 18 27.9941240160 -58 08 13.603221168 9.09 9.68 9.00 9.72   WC5 119 0
25 HD 117297 WR* 13 30 53.2514208432 -62 04 51.858208308 10.81 11.10 10.90 10.70   WC8 100 0
26 MR 48 WR* 13 32 43.7633368296 -65 01 27.837319620 12.85 13.20 12.73 12.61   WN5-w 56 0
27 HD 117688 WR* 13 33 30.1197052368 -62 19 01.214335740 8.69 10.81 10.90 10.44   WN7 134 0
28 HD 119078 WR* 13 43 16.3587374232 -67 24 04.973391360 9.11 9.737 9.40 10.08   WC7/8 110 0
29 MR 51 WR* 13 49 04.4895003144 -65 41 56.121812340 12.75 12.95 12.71 12.89   WN5 63 0
30 MR 53 WR* 14 13 03.5252119752 -65 26 52.707986592 11.93 12.51 12.32 12.21   WN5-w 74 0
31 WRAY 15-1254 WR* 14 50 58.2650618251 -59 51 26.428849251 14.29 13.96 12.47 11.85   WN6 47 0
32 MR 55 WR* 15 15 32.6272277376 -59 02 30.695283672 12.46 12.56 11.84 11.63   WN6-w 72 0
33 HD 143414 WR* 16 03 49.3455286488 -62 41 35.941627680 9.32 10.03 10.10     WN6-w 116 0
34 HD 147419 WR* 16 24 26.2279587024 -51 32 06.061114140   11.46 10.50 10.74   WN6-s 114 0
35 MR 62 WR* 16 41 19.2544733688 -48 01 59.103204780 14.13 13.53 12.58 13.03   WC8+OB 47 0
36 HD 151932 WR* 16 52 19.2477039480 -41 51 16.270066224 6.06 6.79 6.51 7.64   WN7h 326 0
37 HD 152408 WR* 16 54 58.5051071856 -41 09 03.093075612 5.17 5.92 5.77 7.00   O8Iape 388 0
38 HD 152386 WR* 16 55 06.4499424072 -44 59 21.364771956 8.15 8.64 8.13 8.84   O6:Iafpe 88 0
39 MR 66 WR* 17 02 40.3826152512 -45 59 15.453237084   13.62 12.07 11.77   WC9 67 0
40 WRAY 15-1600 WR* 17 04 04.6348092696 -45 12 15.057174564 12.95 13.00 11.55 11.85   WN7(h) 50 0
41 MR 67 WR* 17 10 54.6274683720 -46 36 00.577401516   13.15 12.50 12.28   WN6 40 0
42 LS 3982 WR* 17 14 27.1191622584 -39 45 47.051105904 10.63 10.95 10.41     WN6h-w 73 0
43 CPD-33 4347 WR* 17 18 49.7249262168 -33 57 41.388161760   13.93 12.56 12.21   WN8/WC9 69 0
44 WRAY 15-1666 WR* 17 18 52.8750705984 -38 50 03.606746928 13.93 13.27 11.83 11.43   WN7 79 0
45 HD 156385 WR* 17 19 29.9012420376 -45 38 23.874269568 6.55 6.97 6.92 8.11   WC7 171 0
46 HD 157451 WR* 17 25 23.2779945960 -43 29 31.469964540 10 10.59 10.20 10.46   WC9 96 0
47 HD 318139 WR* 17 42 09.7606723248 -32 33 24.800937012   13.93 12.78 12.20   WN7 49 0
48 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
49 V* V3893 Sgr WR* 17 45 47.5405102320 -26 10 26.779355616   15.13 14.20 14.23   WR 126 1
50 HD 164270 WR* 18 01 43.1453595672 -32 42 55.161329040 8.52 8.97 8.74 9.51   WC9d+? 233 0
51 HD 313643 WR* 18 04 43.6647313968 -21 09 30.555411624 13.58 13.27 12.02 11.67   WC9d 97 0
52 HD 313846 WR* 18 05 25.7344895280 -23 00 20.334949992 10.48 10.69 9.89 9.89   WN9h+OB 143 0
53 HD 165688 WR* 18 07 56.9609461704 -19 23 56.863324824 10.46 10.31 9.87 9.85   WN5-6b 162 0
54 HD 165763 WR* 18 08 28.4692108104 -21 15 11.183076540 7.16 7.54 7.82 8.55   WC6 286 0
55 MR 87 WR* 18 25 30.0135261024 -14 38 40.967308176 13.38 13.09 11.86 11.33   WN6-w 84 0
56 THA 20-1 WR* 18 39 17.9035317744 -10 05 30.898013928   13.07 12.43     WC9d 60 0
57 MR 89 WR* 18 41 00.8670061488 -04 26 14.484137676 13.1 12.97 11.93 11.67   WN7 74 2
58 EM* AS 320 WR* 18 44 13.1526105048 -03 47 57.775268904 13.7 13.340 13.983     WC9d 121 0
59 HD 177230 WR* 19 03 59.0233422072 -04 19 01.910240688 11.32 11.60 11.12     WN8 177 0
60 Hen 2-427 WR* 19 11 30.8749167768 +16 51 38.200938264   12.19 11.50     WN8h 350 0
61 HD 187282 WR* 19 48 32.1967360032 +18 12 03.695582124 9.60 10.49 10.51     WN4(h)-w 202 0
62 MR 97 WR* 20 00 19.1223016752 +33 15 51.099973956 12.93 13.050 12.080     WN7h 84 0
63 HD 191765 WR* 20 10 14.1928045152 +36 10 35.070683376 7.64 8.08 8.08     WN6-s 452 0
64 HD 192103 WR* 20 11 53.5274337792 +36 11 50.525765304 7.77 8.13 8.11     WC8+OB: 339 0
65 HD 192163 WR* 20 12 06.5418877464 +38 21 17.784181008 7.12 7.49 7.50     WN6(h)-s 715 1
66 WR 142 WR* 20 21 44.3438785440 +37 22 30.544989960   14.39 12.99 12.73 11.04 WO2 134 0
67 HD 195177 WR* 20 28 22.6636321896 +38 37 18.977440692 13.42 12.67 11.46     WC4+Be 91 0
68 HD 211564 WR* 22 16 24.0318845736 +55 37 36.767570232   11.72 11.61     WN3(h)-w 123 0
69 HD 213049 WR* 22 27 17.8187635824 +56 15 11.770681752   11.270 10.928 10.922   WC6 93 0
70 MR 119 WR* 23 00 10.1253892224 +60 55 38.410870260 11.85 11.949 10.844 10.520   WN8h 106 0
71 EM* AS 513 WR* 23 43 30.5960809392 +61 55 48.139591872 12.02 11.98 11.282     WN7h+Be? 76 0

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