2007AJ....133.2696B

Query : 2007AJ....133.2696B

2007AJ....133.2696B - Astron. J., 133, 2696-2708 (2007/June-0)

Variability of young massive stars in the galactic super star cluster Westerlund 1.

BONANOS A.Z.

Abstract (from CDS):

This paper presents the first optical variability study of the Westerlund 1 super star cluster in search of massive eclipsing binary systems. A total of 129 new variable stars have been identified, including the discovery of 4 eclipsing binaries that are cluster members, 1 additional candidate, 8 field binaries, 19 field δ Scuti stars, 3 field W UMa eclipsing binaries, 13 other periodic variables, and 81 long-period or nonperiodic variables. These include the known luminous blue variable, the B[e] star, 11 Wolf-Rayet stars, several supergiants, and other reddened stars that are likely members of Westerlund 1. The bright X-ray source corresponding to the Wolf-Rayet star WR 77o (B) is found to be a 3.51 day eclipsing binary. The discovery of a reddened detached eclipsing binary system implies the first identification of main-sequence stars in Westerlund 1.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Eclipsing - open clusters and associations: individual (Westerlund 1) - Stars: Variables: Other - Stars: Wolf-Rayet

VizieR on-line data: <Available at CDS (J/AJ/133/2696): table2.dat table3.dat>

Nomenclature: Table 2: [B2007] JHHMMSS.ss+DDMMSS.s N=129.

Simbad objects: 155

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Number of rows : 155
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
4 PG 0231+051 WD* 02 33 41.3574299856 +05 18 43.649856216 14.562 15.776 16.096 16.267 16.639 DAO.6 149 0
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 [HSH95] 38 ** 05 38 42.0996 -69 06 07.795           O3V+O6V 25 0
7 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
8 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
9 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
10 V* V712 Car EB* 10 23 58.0126366512 -57 45 48.937268268 15.466 15.473 13.5 12.6   O3If*/WN6+O3If*/WN6 176 0
11 HD 92740 WR* 10 41 17.5158425712 -59 40 36.895992960 5.68 6.50 6.42 7.38   WN7h+O9III-V 426 0
12 PG 1323-086 HS* 13 25 39.4669501176 -08 49 19.067387484 12.660 13.341 13.481 13.529 13.608 sdB3IHe8 144 1
13 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
14 NAME Debehogne Object AGN 15 10 06.3534662952 -01 55 21.810235152   16.13 15.5 14.75   ~ 27 0
15 PG 1525-071 HS* 15 28 11.5771773672 -07 16 32.899212840 13.658 14.85 14.89 15.14 15.197 sdO 42 0
16 SA 107- reg 15 39.2 -00 20           ~ 91 0
17 PG 1633+099 HS* 16 35 24.0241690848 +09 47 49.891209036 13.215 14.205 14.396 14.481 14.609 sdB 113 0
18 [B2007] J164639.82-454746.4 V* 16 46 39.7619238264 -45 47 46.563132768   16.940       ~ 1 0
19 [B2007] J164640.03-454750.4 V* 16 46 40.03 -45 47 50.4           ~ 1 0
20 [B2007] J164640.08-455107.8 X 16 46 40.08 -45 51 07.8     18.285     ~ 2 0
21 [B2007] J164641.65-454641.1 V* 16 46 41.6188379400 -45 46 40.873431468   17.994       ~ 1 0
22 [B2007] J164641.74-454713.8 V* 16 46 41.7520572864 -45 47 13.806208212     16.647 14.673 13.773 ~ 1 0
23 [B2007] J164642.10-454701.7 V* 16 46 42.1139148336 -45 47 01.538147940     21.391 19.826 18.233 ~ 1 0
24 [B2007] J164642.32-455150.4 V* 16 46 42.32 -45 51 50.4     18.115     ~ 1 0
25 [B2007] J164642.88-455039.9 V* 16 46 42.88 -45 50 39.9   18.383       ~ 1 0
26 2MASS J16464330-4551594 V* 16 46 43.30 -45 51 59.5           ~ 1 0
27 [B2007] J164643.88-455348.7 V* 16 46 43.88 -45 53 48.7     19.646     ~ 1 0
28 [B2007] J164645.84-455108.1 V* 16 46 45.8410691808 -45 51 08.072975484     18.808 16.548 14.415 ~ 4 0
29 [B2007] J164646.08-454844.3 V* 16 46 46.0856437344 -45 48 44.310414816     17.372     ~ 1 0
30 WR 77aa WR* 16 46 46.2846745152 -45 47 58.260872472       15.516 13.063 WC9d 16 0
31 [B2007] J164647.07-455222.8 V* 16 46 47.0634274848 -45 52 23.034717660       16.187 13.872 ~ 3 0
32 [B2007] J164647.28-455050.5 V* 16 46 47.2166012496 -45 50 50.724293676   18.071       ~ 1 0
33 OGLE GD1098.13.01231 dS* 16 46 48.3667853448 -45 53 56.767946568       18.324 15.682 ~ 3 0
34 2MASS J16464964-4552530 ** 16 46 49.6452986232 -45 52 53.050105704     18.887 16.589 14.406 O9-9.5II+O? 8 0
35 2MASS J16464985-4552086 V* 16 46 49.86 -45 52 08.7     18.825     ~ 1 0
36 [B2007] J164649.98-455417.7 V* 16 46 49.98 -45 54 17.7   21.469 19.730 18.874 17.752 ~ 1 0
37 [B2007] J164650.05-455105.4 V* 16 46 50.0643182976 -45 51 05.464599984     18.165     ~ 1 0
38 [B2007] J164650.83-455302.7 V* 16 46 50.8281422136 -45 53 02.799867768       14.568 13.700 ~ 1 0
39 [B2007] J164651.70-454907.9 X 16 46 51.6807447672 -45 49 07.994013384     16.289     ~ 2 0
40 [B2007] J164652.24-455115.5 V* 16 46 52.2198573816 -45 51 15.489399564   17.941 16.546     ~ 1 0
41 [CMN2008] J164652.6-455357 X 16 46 52.67 -45 53 57.1     16.804 16.274 14.724 ~ 2 0
42 2MASS J16465341-4553000 Be* 16 46 53.41 -45 53 00.1     18.061 16.598 14.425 OBe 7 0
43 [B2007] J164654.45-455330.0 V* 16 46 54.4363733376 -45 53 30.082706088       17.408 14.975 O9-9.5III 7 0
44 [B2007] J164656.89-455204.4 ** 16 46 56.89 -45 52 04.4   22.5 19.14 17.141 14.917 O+O? 5 0
45 Cl* Westerlund 1 W 373 s*b 16 46 57.7255119168 -45 53 20.035273668       14.741 12.318 B0Iab 13 0
46 Cl* Westerlund 1 W 55 s*b 16 46 58.4205093840 -45 51 31.294157724   21.6 18.030 15.283 12.758 B0Ia 19 0
47 [B2007] J164658.78-455431.9 V* 16 46 58.7770177032 -45 54 31.941132336     20.313 17.377 14.816 O9-9.5III 8 0
48 [B2007] J164658.97-455017.8 V* 16 46 58.9753040520 -45 50 17.976739452   19.188 17.650     ~ 1 0
49 Cl* Westerlund 1 W 2 s*b 16 46 59.7175806088 -45 50 51.190946043   20.4 16.978 14.287 11.771 B2Ia 20 0
50 2MASS J16465979-4551400 LP? 16 46 59.7718299179 -45 51 40.087765062       19.264 16.536 ~ 2 0
51 [B2007] J164659.93-455025.3 V* 16 46 59.9378046305 -45 50 25.533716514   23.0 19.48 17.206 14.818 O9.5II 7 0
52 Cl* Westerlund 1 W 53 s*b 16 47 00.3870731784 -45 51 31.849633872   22.9 18.51 15.80 13.13 OBIa+OBIa 12 0
53 [B2007] J164700.54-455223.3 V* 16 47 00.4984025640 -45 52 23.653199928   17.905       ~ 1 0
54 [B2007] J164700.52-454829.7 V* 16 47 00.52 -45 48 29.7       17.981 15.806 ~ 1 0
55 Cl* Westerlund 1 CN I WR* 16 47 00.8820136008 -45 51 20.517977916       17.336 14.340 WN8o 21 0
56 Cl* Westerlund 1 W 21 s*b 16 47 01.1124528826 -45 51 13.583454380   22.5 18.41 15.619 12.861 B0.5Ia 13 0
57 Cl* Westerlund 1 W 57 s*b 16 47 01.3600091808 -45 51 45.804003408   20.7 16.877 13.83 11.13 B4Ia 22 0
58 Cl* Westerlund 1 BKS H s*y 16 47 01.4269856784 -45 50 37.248841536   18.781 14.47 11.80 9.15 F3Ia+ 31 0
59 Cl* Westerlund 1 W 234 V* 16 47 01.44 -45 52 35.0       15.25 12.85 O9.5Ib 8 0
60 [B2007] J164701.48-455116.1 V* 16 47 01.4720127004 -45 51 15.946468716       18.240 15.553 ~ 3 0
61 Cl* Westerlund 1 W 78 s*b 16 47 01.5500127120 -45 49 57.922981500   21.0 17.413 14.621 12.04 B1Ia 14 0
62 [RCN2009] W3005 s*b 16 47 01.6814988264 -45 52 58.067536008       15.393 12.966 O9.5Iab 16 0
63 Cl* Westerlund 1 W 52 s*b 16 47 01.8449474352 -45 51 29.434394880   21.8 17.876 14.745 12.065 B1.5Ia 13 0
64 Cl* Westerlund 1 W 49 s*b 16 47 01.9027544712 -45 50 31.660433592   22.6 18.76 16.392 13.638 B0Iab 14 0
65 Cl* Westerlund 1 W 12 s*y 16 47 02.2214295629 -45 50 58.987616665   22.0 17.575 13.611 10.42 A5Ia+ 27 0
66 Cl* Westerlund 1 W 11 s*b 16 47 02.2390158456 -45 50 47.186514564   21.2 17.508 14.599 11.898 B2Ia 19 0
67 [B2007] J164702.32-455115.2 V* 16 47 02.2953057384 -45 51 15.035196240       17.536 14.902 ~ 4 0
68 Cl* Westerlund 1 W 61a s*b 16 47 02.2999985640 -45 51 41.772039336   21.2 17.506 14.633 12.01 B0.5Ia 18 0
69 Cl Westerlund 1 OpC 16 47 02.4 -45 51 07           ~ 655 1
70 Cl* Westerlund 1 W 48 V* 16 47 02.4593648232 -45 51 24.952273200       16.818 13.966 ~ 5 0
71 Cl* Westerlund 1 W 23a s*b 16 47 02.5776330614 -45 51 08.902293204   22.1 18.316 14.986 12.081 B2Ia+B:I? 20 0
72 Cl* Westerlund 1 W 40a LP? 16 47 02.6756695632 -45 50 50.489371572   22.2 18.05 15.38 12.73 ~ 7 0
73 [B2007] J164702.71-455023.9 V* 16 47 02.71 -45 50 23.9   19.651       ~ 1 0
74 WR 77f WR* 16 47 02.9772955944 -45 50 19.713734556   21.552 17.792 15.035 12.508 WNL/BIa+ 38 0
75 Cl* Westerlund 1 W 6a s*b 16 47 03.0477797919 -45 50 23.748131606   22.2 18.41 15.80 13.16 B0.5Iab 21 0
76 Cl* Westerlund 1 W 237 s*r 16 47 03.1097130192 -45 52 18.960733164   22.8 19.008 13.634 9.19 M3I 32 0
77 [B2007] J164703.11-455131.1 V* 16 47 03.1161853056 -45 51 31.167444060     19.167 15.929 13.165 ~ 4 0
78 Cl* Westerlund 1 W 42 s*b 16 47 03.2521856424 -45 50 52.195013052         10.764 B9Ia+ 21 0
79 [B2007] J164703.24-455311.1 V* 16 47 03.2549060916 -45 53 11.139448113       18.545 15.847 ~ 2 0
80 Cl* Westerlund 1 W 10 s*b 16 47 03.3405625992 -45 50 34.603317456   22.720 18.516 15.257   O9.5/B0.5Iae 20 0
81 Cl* Westerlund 1 W 43 ** 16 47 03.56 -45 50 57.6       15.378 12.647 ~ 5 0
82 Cl* Westerlund 1 W 7 s*b 16 47 03.6281794392 -45 50 14.365482036   20.0 15.972 12.73 9.99 B5Ia+ 31 0
83 [B2007] J164703.75-455112.7 V* 16 47 03.7367526189 -45 51 12.627678847       17.042 13.879 ~ 2 0
84 Cl* Westerlund 1 W 46a s*b 16 47 03.9147803107 -45 51 19.743263385   23.0 18.55 15.537 12.499 B1Ia 18 0
85 WR 77i WR* 16 47 03.9628130472 -45 51 37.672066152     19.79 16.906 13.949 WC9d 18 0
86 [B2007] J164703.96-455212.0 LP? 16 47 03.9751488648 -45 52 11.705095704       17.262 14.797 ~ 5 0
87 Cl* Westerlund 1 CN G WR* 16 47 04.0152346631 -45 51 25.019757928   22.7 20.87 17.75 14.68 WN7o 24 0
88 Cl* Westerlund 1 W 33 s*b 16 47 04.1256274968 -45 50 48.488202564   20.090 15.61 12.803 10.04 B5Ia+ 26 0
89 Cl* Westerlund 1 W 60 s*b 16 47 04.1335644720 -45 51 52.259535324   22.8 18.50 16.041 13.384 B0Iab 20 0
90 Cl* Westerlund 1 W 9 WR* 16 47 04.1419806984 -45 50 31.311670632   21.8 17.47 14.47 11.74 sgB[e] 56 0
91 WR 77k WR* 16 47 04.2072122904 -45 51 07.177760892   22.6 18.86 15.61 12.52 WN7 29 0
92 Cl* Westerlund 1 CN H WR* 16 47 04.2489212873 -45 51 20.211867845           WC9d 17 0
93 Cl* Westerlund 1 W 238 s*b 16 47 04.4263582176 -45 52 27.788277972   21.4 17.820 14.98 12.45 B1Iab 18 0
94 [B2007] J164704.52-455119.4 V* 16 47 04.52 -45 51 19.4     16.556     ~ 1 0
95 [B2007] J164704.55-455008.5 V* 16 47 04.5264523844 -45 50 08.944546740   21.9 18.89 16.37 13.76 O9-9.5I-III 9 0
96 Cl* Westerlund 1 W 28 s*b 16 47 04.6646286552 -45 50 38.503394520   20.9 17.146 14.303 11.64 B2Ia 17 0
97 [B2007] J164704.69-455206.8 LP? 16 47 04.6861300696 -45 52 06.751201957   22.8 19.17 16.899 14.405 O9.5II 7 0
98 Cl* Westerlund 1 W 20 s*r 16 47 04.6967287296 -45 51 23.953706496       15.660   M6I 28 0
99 [B2007] J164704.77-454947.1 V* 16 47 04.7415148896 -45 49 47.110299132   18.568 16.896     ~ 4 0
100 Cl* Westerlund 1 W 8 s*y 16 47 04.7959778348 -45 50 25.013789709   19.9 15.913 12.64 9.89 F8Ia+ 23 0
101 Cl* Westerlund 1 W 19 s*b 16 47 04.8672458112 -45 50 59.295902136   22.6 18.784 15.366 12.452 B1Ia 19 0
102 [B2007] J164704.99-455013.3 V* 16 47 04.9829238936 -45 50 13.420666428       17.515 14.782 ~ 2 0
103 Cl* Westerlund 1 W 36 s*b 16 47 05.0826653568 -45 50 55.155662808   22.8 18.89 16.09 13.38 OBIa+OBIa 14 0
104 2MASS J16470511-4551107 V* 16 47 05.11 -45 51 10.7       17.621 14.354 ~ 1 0
105 Cl* Westerlund 1 CN F WR* 16 47 05.2114579896 -45 52 24.985725096   21.7 17.86 15.39 12.90 WC9d 33 0
106 Cl* Westerlund 1 CN B WR* 16 47 05.3717585660 -45 51 04.811705369     20.99 17.50 14.37 WN7o 32 0
107 Cl* Westerlund 1 W 69 V* 16 47 05.39 -45 51 30.5     16.322     ~ 1 0
108 Cl* Westerlund 1 W 18 s*b 16 47 05.7082494087 -45 50 50.480383849   21.2 17.610 14.898 12.228 B0.5Ia 12 0
109 2MASS J16470575-4551334 LP? 16 47 05.7704715000 -45 51 33.477375888       19.907 16.182 ~ 3 0
110 Cl* Westerlund 1 W 25 s*b 16 47 05.7882476736 -45 50 33.368306136   21.9 17.85 15.22 12.61 O9Iab 13 0
111 Cl* Westerlund 1 CN R WR* 16 47 05.9726730842 -45 50 23.072495547       17.652 15.223 WN5o 25 0
112 Cl* Westerlund 1 CN E WR* 16 47 06.0667110144 -45 52 08.266249200     18.379 15.675 12.940 WC9 25 0
113 Cl* Westerlund 1 CN D WR* 16 47 06.2554455566 -45 51 26.391243810       18.935 15.600 WN7o 23 0
114 2MASS J16470625-4551042 s*b 16 47 06.2605539440 -45 51 03.954008939   23.8 20.50 17.150 14.065 B1.5Ia 9 0
115 Cl* Westerlund 1 W 265 s*y 16 47 06.2785465416 -45 49 23.774098692   22.0 17.739 13.62 10.54 F1-5Ia+ 27 0
116 [B2007] J164706.34-454826.2 EB* 16 47 06.3380977584 -45 48 26.252253792     20.486 19.230 17.733 ~ 2 0
117 Cl* Westerlund 1 W 13 WR* 16 47 06.4540771320 -45 50 26.072579796   21.1 17.19 14.63 12.06 WNL/BIa+ 40 0
118 Cl* Westerlund 1 W 16 sg* 16 47 06.6158603112 -45 50 42.186706944   20.5 16.248 12.82 9.90 A5Ia+ 29 0
119 Cl* Westerlund 1 W 15 * 16 47 06.6306037464 -45 50 29.723762580   22.8 18.96 16.38 13.75 O9Ib 29 0
120 2MASS J16470667-4547384 s*b 16 47 06.6726520752 -45 47 38.465045304   22.1 18.250 14.919 12.05 B1-2Ia+ 9 0
121 [B2007] J164707.01-454940.1 * 16 47 07.01 -45 49 40.1       16.702 13.938 O9III 8 0
122 Cl* Westerlund 1 W 74 s*b 16 47 07.0783996992 -45 50 13.086504168       15.835 13.312 O9.5Iab 17 0
123 [B2007] J164707.29-455024.2 V* 16 47 07.3077974568 -45 50 24.167114412       16.811 14.346 ~ 4 0
124 Cl* Westerlund 1 W 243 s*b 16 47 07.5040736160 -45 52 29.123491188   19.873 15.730     LBV 67 0
125 Cl* Westerlund 1 CN O WR* 16 47 07.6630825488 -45 52 35.964833052       16.886 14.047 WN6o 18 0
126 2MASS J16470780-4551479 * 16 47 07.8203317464 -45 51 47.911549536       16.940 13.939 B0Ib(+O?) 10 0
127 2MASS J16470822-4550565 LP? 16 47 08.2259139960 -45 50 56.506395156       17.123 13.710 ~ 4 0
128 WR 77sc WR* 16 47 08.3538521592 -45 50 45.414739212     19.69 16.59 13.68 WN7b 32 0
129 Cl* Westerlund 1 W 71 s*b 16 47 08.4584673360 -45 50 49.338181284   21.5 17.531 14.158 11.16 B2.5Ia 24 0
130 Cl* Westerlund 1 W 70 s*b 16 47 09.3836656992 -45 50 49.668960804   21.2 16.88 14.10 11.352 B3Ia 19 0
131 [B2007] J164709.75-455124.5 V* 16 47 09.75 -45 51 24.5       19.702 16.694 ~ 1 0
132 [B2007] J164711.04-455136.5 V* 16 47 11.04 -45 51 36.5     20.268     ~ 1 0
133 [B2007] J164711.06-454930.9 V* 16 47 11.0539385424 -45 49 31.241540905       17.729 15.018 ~ 2 0
134 [RCN2009] W3003 V* 16 47 11.6073210840 -45 49 22.478619972   23.1 19.08 16.211 13.314 B0Ib 16 0
135 2MASS J16471294-4547546 EB* 16 47 12.9252052392 -45 47 54.476510352   21.296 19.397 18.471 17.280 ~ 2 0
136 [RCN2009] W3004 s*b 16 47 13.3832726280 -45 49 10.636397724   23.2 18.93 15.960 12.990 B0Iab 12 0
137 [B2007] J164713.62-454857.0 * 16 47 13.6386005184 -45 48 57.112077816   19.557 17.289 16.020 14.563 ~ 2 0
138 [B2007] J164714.19-454800.7 * 16 47 14.2106161875 -45 48 00.712369566     18.134     ~ 4 0
139 [B2007] J164716.80-455120.8 V* 16 47 16.8085205184 -45 51 21.009741012   19.456 17.650 16.781 15.596 ~ 1 0
140 [B2007] J164718.17-455029.3 * 16 47 18.1773901632 -45 50 29.302838772     19.387     ~ 2 0
141 [B2007] J164718.51-455030.7 EB* 16 47 18.5110833720 -45 50 30.794175996   19.227 17.450 16.646 15.474 ~ 4 0
142 [CMN2008] J164718.7-454758 X 16 47 18.72 -45 47 58.3   19.316 17.758     ~ 2 0
143 [B2007] J164719.50-454957.3 V* 16 47 19.4864172744 -45 49 57.546468192     17.605     ~ 1 0
144 [CMN2008] J164720.3-454854 X 16 47 20.42 -45 48 54.5     16.523     ~ 2 0
145 [B2007] J164720.75-455002.6 V* 16 47 20.7083894088 -45 50 02.625642816     16.961     ~ 1 0
146 [B2007] J164720.83-454634.1 V* 16 47 20.8199132280 -45 46 34.151009880     15.719     ~ 1 0
147 [B2007] J164725.67-455412.9 V* 16 47 25.6944311664 -45 54 12.948839064   18.881 17.333     ~ 1 0
148 [B2007] J164726.07-455034.3 V* 16 47 26.0905267488 -45 50 34.453804236     18.794     ~ 1 0
149 SA 109- reg 17 45.1 -00 13           ~ 14 0
150 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
151 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 792 0
152 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 561 0
153 HD 177230 WR* 19 03 59.0233422072 -04 19 01.910240688 11.32 11.60 11.12     WN8 177 0
154 [L92b] Mark A HS* 20 43 59.2253596272 -10 47 41.696051820 11.854 13.010 13.256 13.370 13.494 sdO 75 1
155 NAME Local Group GrG ~ ~           ~ 9325 0

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