2012AJ....144..162N

Query : 2012AJ....144..162N

2012AJ....144..162N - Astron. J., 144, 162 (2012/December-0)

The discovery of a rare WO-type Wolf-Rayet star in the Large Magellanic Cloud.

NEUGENT K.F., MASSEY P. and MORRELL N.

Abstract (from CDS):

While observing OB stars within the most crowded regions of the Large Magellanic Cloud, we happened upon a new Wolf-Rayet (WR) star in Lucke-Hodge 41, the rich OB association that contains S Doradus and numerous other massive stars. At first glance the spectrum resembled that of a WC4 star, but closer examination showed strong O VI λλ3811, 34 lines, leading us to classify it as a WO4. This is only the second known WO in the LMC, and the first known WO4 (the other being a WO3). This rarity is to be expected due to these stars' short lifespans as they represent the most advanced evolutionary stage in a massive star's lifetime before exploding as supernovae. This discovery shows that while the majority of WRs within the LMC have been discovered, there may be a few WRs left to be found.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: LMC - galaxies: stellar content - Local Group - stars: evolution - stars: Wolf-Rayet - supergiants

Simbad objects: 39

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Number of rows : 39
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
3 UCAC2 1795927 WR* 04 53 03.765 -69 23 51.94 13.167 14.210 14.391 14.04 14.402 WN3b+abs 9 0
4 UCAC4 104-005748 WR* 04 55 07.5914894544 -69 12 31.708100520   15.11 15.23 15.27   WN3 6 0
5 UCAC4 104-007058 WR* 05 02 59.2507895160 -69 14 02.328152172   15.19 15.34 15.14   WN3h+abs 7 0
6 HD 269321 s*b 05 17 56.0734487568 -69 16 03.809703252 10.28 10.93 10.84 10.53 10.342 B5Iae 73 0
7 TYC 9162-199-1 * 05 17 59.8133983296 -69 16 14.668677120 11.757 12.149 12.04     A2I 11 0
8 [H2013] LMCe 584 WR* 05 18 11.01 -69 13 11.3 12.88 14.26 13.95     WO4 14 0
9 HD 35342C s*b 05 18 11.070 -69 13 03.19   12.18 12.35     B0.2I 7 0
10 HD 35342A s*b 05 18 11.076 -69 13 06.59   11.76 11.66     B0.2I 10 0
11 HD 35342 ** 05 18 11.30 -69 13 06.0           ~ 13 0
12 HD 35342B s*b 05 18 11.906 -69 13 03.35 10.365 11.489 11.281     B0.5I 5 0
13 BI 131 * 05 18 12.9514929552 -69 15 50.265351972 12.293 13.384 13.586   13.627 O8.5V 9 0
14 [L72] LH 41-51 s?b 05 18 13.6922580408 -69 12 01.248641280 11.318 12.111 12.397   12.518 O9.7I(f)+O9V 9 0
15 V* S Dor sg* 05 18 14.3570612088 -69 15 01.149576912 9.08 10.39 10.25 9.74 9.14 Be3 395 0
16 BI 132 * 05 18 16.6781573088 -69 15 05.647760064 11.252 12.086 12.010   12.397 O9.5I 4 0
17 HD 269333 WR* 05 18 19.2104631720 -69 11 40.657335684 10.375 11.23 11.29 11.47 11.412 WN+BI 63 0
18 [L72] LH 41-58 EB* 05 18 23.6409550848 -69 11 01.494339612 11.813 12.884 13.026   13.282 O8.5III 15 0
19 2MASS J05182703-6911170 * 05 18 27.0198022584 -69 11 17.129128344 12.293 13.324 13.496   13.505 O9.5V 3 0
20 SK -69 99 * 05 18 30.1694226624 -69 13 14.054852460   11.76 11.94     A0I 14 0
21 [L72] LH 41-22 s?y 05 18 31.8666560112 -69 14 28.262635620 14.603 14.114 13.516   12.501 F5I 4 0
22 BI 135 * 05 18 33.682 -69 15 18.58 11.383 12.454 12.626   12.712 O8.5III(f) 9 0
23 2MASS J05183708-6913176 * 05 18 37.0874815416 -69 13 17.694180660 12.133 13.224 13.396   13.534 O7III 4 0
24 2MASS J05184234-6912561 * 05 18 42.3524113872 -69 12 56.130455520 11.953 13.064 13.236   13.210 O6III 5 0
25 NGC 1910 As* 05 18 42.50 -69 14 12.1     9.65     ~ 52 1
26 [L72] LH 41-27 * 05 18 49.3423769088 -69 14 05.557267896 11.703 12.774 12.936     O7f(n)p 5 0
27 HD 269357 s*b 05 18 59.4790204920 -69 12 54.801550908   11.89 12.10     O6Ib(f) 63 0
28 BI 140 * 05 19 01.7851368672 -69 13 06.719604384 11.773 12.904 13.086   13.132 O4III 9 0
29 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
30 CPD-69 394 WR* 05 34 36.0879084840 -69 45 36.503591616 11.428 12.10 12.131 12.41 12.136 B0I+WN 24 0
31 Brey 58 WR* 05 35 42.2605235645 -69 11 55.105304260   14.62 14.13     O3If*/WN6 41 0
32 BAT99 78 WR* 05 35 59.085 -69 11 51.12   13.07 12.94     WN6(+O8V) 26 0
33 Brey 74a WR* 05 37 51.3386549880 -69 09 46.690186716 12.483 13.474 13.446 13.62 13.278 O3If* 43 0
34 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1276 2
35 NGC 2070 Cl* 05 38 42 -69 06.0     7.25     ~ 406 1
36 UCAC4 105-014417 WR* 05 38 55.5222410976 -69 04 26.809579344   16.66 16.08   14.89 WN5h 65 0
37 Brey 93 WR* 05 39 34.3017622440 -68 44 09.155562972 14.291 15.626 15.204   15.620 WO3 67 0
38 [MS70] 4 WR* 10 51 38.9063499504 -60 56 34.909328328 13.57 13.80 12.78 12.56   WO4+O5III/V((f)) 56 0
39 NAME Local Group GrG ~ ~           ~ 9325 0

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