2008A&A...477..147C

Query : 2008A&A...477..147C

2008A&A...477..147C - Astronomy and Astrophysics, volume 477, 147-163 (2008/1-1)

Unveiling the X-ray point source population of the Young Massive Cluster Westerlund 1.

CLARK J.S., MUNO M.P., NEGUERUELA I., DOUGHERTY S.M., CROWTHER P.A., GOODWIN S.P. and DE GRIJS R.

Abstract (from CDS):

We investigate the nature of the X-ray point source population within the Young Massive Cluster Westerlund 1. Chandra observations of 18ks and 42ks were used to determine the X-ray properties of emitters within Wd 1, while a comprehensive multiwavelength dataset was employed to constrain their nature. We find X-ray emission from a multitude of different stellar sources within Wd 1, including both evolved high mass and low mass pre-MS stars. We attribute the X-ray emission from the high mass component to both single stars and colliding wind binaries on the basis of their observed flux and spectral properties, with binaries being systematically harder and more luminous than single stars. We are able to infer a high binary fraction for both WN (10/16) and WC stars (7/8), resulting in a combined Wolf Rayet binary fraction of >70%. These represent the most stringent limits currently placed on the binary fraction of very massive (>45M☉) stars. We place the first observational constraints on X-ray emission from stars transitioning between the Main Sequence and Wolf Rayet phases, finding that both hot (B hypergiants) and cool (yellow hypergiants and red supergiants) spectral types appear to be intrinsically X-ray faint. The B[e] star W9 is found to be X-ray bright and shows similarities to both the X-ray binary SS433 and the Luminous Blue Variable η Carinae. Globally, we find the point source population to be systematically fainter than those found in younger massive star forming regions such as NGC3603 and R136/30 Doradus, consistent with a loss of the most massive stars to SNe and a reduction in emissivity from the low mass pre-Main Sequence stars. No unambiguous evidence for X-ray emission due to accretion onto relativistic objects of any mass is found, although the current data do not exclude the presence of either a High Mass X-ray Binary or an Intermediate Mass Black Hole accreting at a low rate. Finally, we suggest the progenitor mass for the magnetar CXOU J164710.2-455216 is comparable to that of SGR1806-20 (∼55M☉), while that for SGR1900+14 appears significantly lower (∼15M☉), implying that magnetars may form from stars with a wide range of initial masses.

Abstract Copyright: ∼

Journal keyword(s): stars: evolution - open clusters and associations: individual: Westerlund 1 - X rays: stars

VizieR on-line data: <Available at CDS (J/A+A/477/147): table1.dat table3.dat>

Nomenclature: Table 1: [CMN2008] JHHMMSS.s+DDMMSS N=241. Table 3, col(5): [CMN2008] C07-XN (Nos X1 to X7).

Simbad objects: 278

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Number of rows : 278
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 HD 5980 WR* 00 59 26.5838833944 -72 09 53.927337312   11.13 11.31   11.029 WN4+O7I: 393 1
2 V* CI Cam HXB 04 19 42.1355996520 +55 59 57.706599192 12.13 12.41 11.77 10.79 9.99 B0/2I[e] 254 0
3 M 1 SNR 05 34 30.9 +22 00 53           ~ 6192 1
4 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5259 0
5 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2019 2
6 * alf Ori s*r 05 55 10.30536 +07 24 25.4304 4.38 2.27 0.42 -1.17 -2.45 M1-M2Ia-Iab 1671 0
7 * eta Car Em* 10 45 03.545808 -59 41 03.95124 6.37 7.03 6.48 6.123 4.41 LBV 2438 0
8 NGC 3603 OpC 11 15 10.8 -61 15 32           ~ 1067 1
9 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1330 1
10 IGR J16318-4848 HXB 16 31 48.3090342864 -48 49 00.665054832         16.217 B[e]I 173 0
11 2MASS J16455561-4556012 * 16 45 55.6119489072 -45 56 01.285287432           ~ 1 0
12 [CMN2008] J164610.4-455448 X 16 46 10.25 -45 54 48.0           ~ 1 0
13 [CMN2008] J164623.7-455928 X 16 46 23.7 -45 59 28           ~ 1 0
14 [CMN2008] J164626.6-455642 X 16 46 26.6 -45 56 42           ~ 1 0
15 [CMN2008] J164629.0-460229 X 16 46 29.0 -46 02 29           ~ 1 0
16 [CMN2008] J164629.4-455518 X 16 46 29.4 -45 55 18           ~ 1 0
17 2MASS J16463134-4555479 * 16 46 31.3494184152 -45 55 47.839854108           ~ 1 0
18 [CMN2008] J164633.9-455732 X 16 46 33.9 -45 57 32           ~ 1 0
19 2MASS J16463564-4551557 * 16 46 35.6530432776 -45 51 55.677880404           ~ 1 0
20 [CMN2008] J164636.2-454751 X 16 46 36.28 -45 47 51.8           ~ 1 0
21 [CMN2008] J164640.0-454813 X 16 46 40.0 -45 48 13           ~ 1 0
22 [B2007] J164640.08-455107.8 X 16 46 40.08 -45 51 07.8     18.285     ~ 2 0
23 [CMN2008] J164640.8-454834 X 16 46 40.8 -45 48 34           ~ 1 0
24 [CMN2008] J164641.0-455209 X 16 46 41.0 -45 52 09           ~ 1 0
25 [CMN2008] J164641.4-455016 X 16 46 41.4 -45 50 16           ~ 1 0
26 2MASS J16464290-4559200 * 16 46 42.9109887312 -45 59 20.069384136           ~ 1 0
27 [CMN2008] J164643.7-455128 X 16 46 43.7 -45 51 28           ~ 1 0
28 [CMN2008] J164643.8-455132 X 16 46 43.8 -45 51 32           ~ 1 0
29 [CMN2008] J164644.9-455335 X 16 46 44.9 -45 53 35           ~ 1 0
30 [CMN2008] J164646.1-455221 X 16 46 46.1 -45 52 21           ~ 1 0
31 [CMN2008] J164647.1-454618 X 16 46 47.1 -45 46 18           ~ 1 0
32 2MASS J16464784-4551308 * 16 46 47.8567342056 -45 51 30.801825144           ~ 3 0
33 2MASS J16464859-4546399 X 16 46 48.5902066512 -45 46 39.866986128           ~ 1 0
34 [CMN2008] J164648.8-455307 X 16 46 48.8682842328 -45 53 06.991613160           ~ 1 0
35 [CMN2008] J164649.8-454824 X 16 46 49.8 -45 48 24           ~ 1 0
36 HD 328793 * 16 46 50.3737821864 -45 56 00.912628752   11.64 11.73     A0 5 0
37 [CMN2008] J164650.5-454700 X 16 46 50.5 -45 47 00           ~ 1 0
38 [CMN2008] J164650.7-460058 X 16 46 50.7 -46 00 58           ~ 1 0
39 [CMN2008] J164650.8-454943 X 16 46 50.8 -45 49 43           ~ 1 0
40 [CMN2008] J164650.8-454917 X 16 46 50.8 -45 49 17           ~ 1 0
41 2MASS J16465105-4547084 * 16 46 51.0511018056 -45 47 08.428903980           ~ 1 0
42 [B2007] J164651.70-454907.9 X 16 46 51.6807447672 -45 49 07.994013384     16.289     ~ 2 0
43 [CMN2008] J164651.7-455017 X 16 46 51.7 -45 50 17           ~ 1 0
44 [CMN2008] J164652.3-454924 X 16 46 52.3 -45 49 24           ~ 1 0
45 [CMN2008] J164652.6-455357 X 16 46 52.67 -45 53 57.1     16.804 16.274 14.724 ~ 2 0
46 [CMN2008] J164653.3-460722 X 16 46 53.47 -46 07 22.4           ~ 1 0
47 2MASS J16465354-4548329 * 16 46 53.5497666768 -45 48 33.047140968           ~ 1 0
48 [CMN2008] J164653.9-455230 X 16 46 53.9 -45 52 30           ~ 1 0
49 [CMN2008] J164654.0-455111 X 16 46 54.0 -45 51 11           ~ 1 0
50 [RCN2009] W3002 s*b 16 46 54.24 -45 51 54.7   23.6 18.93 16.08 13.26 B0Iab 9 0
51 [CMN2008] J164654.4-455053 X 16 46 54.4 -45 50 53           ~ 1 0
52 [CMN2008] J164654.6-455316 X 16 46 54.6 -45 53 16           ~ 1 0
53 [CMN2008] J164654.6-455129 X 16 46 54.6 -45 51 29           ~ 1 0
54 [CMN2008] J164654.8-454900 X 16 46 54.8 -45 49 00           ~ 1 0
55 [CMN2008] J164655.2-455848 X 16 46 55.2 -45 58 48           ~ 1 0
56 [CMN2008] J164655.2-455124 X 16 46 55.2 -45 51 24           ~ 1 0
57 [CMN2008] J164655.3-455258 X 16 46 55.3 -45 52 58           ~ 1 0
58 [CMN2008] J164655.6-454428 X 16 46 55.6 -45 44 28           ~ 1 0
59 [CMN2008] J164656.0-455029 X 16 46 56.0 -45 50 29           ~ 1 0
60 [CMN2008] J164656.0-455000 X 16 46 56.0 -45 50 00           ~ 1 0
61 HD 151018 * 16 46 56.1174957336 -45 53 14.312361444 8.9 9.93 9.37 9.35   O9Ib 67 0
62 [CMN2008] J164656.3-455118 X 16 46 56.3 -45 51 18           ~ 1 0
63 SSTGLMC G339.5949-00.3382 X 16 46 56.84 -45 46 25.9           ~ 1 0
64 [CMN2008] J164656.9-454957 X 16 46 56.9 -45 49 57           ~ 1 0
65 [CMN2008] J164657.0-455231 X 16 46 57.0 -45 52 31           ~ 1 0
66 [CMN2008] J164657.2-455235 X 16 46 57.2 -45 52 35           ~ 1 0
67 [CMN2008] J164657.2-455153 X 16 46 57.2 -45 51 53           ~ 1 0
68 [CMN2008] J164657.2-455139 X 16 46 57.2 -45 51 39           ~ 1 0
69 [CMN2008] J164657.3-455030 X 16 46 57.3 -45 50 30           ~ 1 0
70 [CMN2008] J164657.7-455300 X 16 46 57.7 -45 53 00           ~ 1 0
71 [CMN2008] J164658.2-460639 X 16 46 58.2 -46 06 39           ~ 1 0
72 [CMN2008] J164658.2-455056 s*b 16 46 58.2313040184 -45 50 56.923471680           O9.5Iab 9 0
73 2MASS J16465839-4553378 X 16 46 58.3886135304 -45 53 37.867919352           ~ 1 0
74 [CMN2008] J164658.5-455316 X 16 46 58.5 -45 53 16           ~ 1 0
75 [CMN2008] J164658.6-455114 X 16 46 58.6 -45 51 14           ~ 1 0
76 [CMN2008] J164658.8-455301 X 16 46 58.8 -45 53 01           ~ 1 0
77 [CMN2008] J164658.8-455014 X 16 46 58.8 -45 50 14           ~ 1 0
78 HD 328795 * 16 46 58.8093661032 -46 02 36.050423280   11.53 10.84     G5 3 0
79 Cl* Westerlund 1 W 56b * 16 46 58.8667320511 -45 51 45.947165816   22.8 18.88 16.36 13.76 O9.5Ib 12 0
80 [CMN2008] J164658.9-455038 X 16 46 58.9 -45 50 38           ~ 1 0
81 [CMN2008] J164659.0-455158 X 16 46 59.0 -45 51 58           ~ 1 0
82 Cl* Westerlund 1 W 84 * 16 46 59.0490595608 -45 50 28.293859689   21.3 17.82 15.60 13.63 O9.5Ib 13 0
83 Cl* Westerlund 1 W 1 s*b 16 46 59.4000262680 -45 50 46.721009148   21.9 18.37 16.09 13.65 O9.5Iab 10 0
84 [CMN2008] J164659.8-455227 X 16 46 59.8 -45 52 27           ~ 1 0
85 [CMN2008] J164659.9-454958 X 16 46 59.84 -45 49 59.5           ~ 1 0
86 [CMN2008] J164659.9-454951 X 16 46 59.9 -45 49 51           ~ 1 0
87 Cl* Westerlund 1 CN N WR* 16 46 59.9151721464 -45 55 25.670942256       16.9 13.0 WC9d 15 0
88 [CMN2008] J164700.0-455349 X 16 47 00.0 -45 53 49           ~ 1 0
89 [CMN2008] J164700.1-460559 X 16 47 00.04 -46 05 58.9           ~ 1 0
90 [CMN2008] J164700.2-454640 X 16 47 00.2 -45 46 40           ~ 1 0
91 [CMN2008] J164700.3-454940 X 16 47 00.3 -45 49 40           ~ 1 0
92 HD 328794 SB* 16 47 00.3607313496 -45 59 23.490698532   11.60 10.91     F5 3 0
93 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 11 0
94 [CMN2008] J164700.5-455937 X 16 47 00.5 -45 59 37           ~ 1 0
95 [CMN2008] J164700.9-454927 X 16 47 00.9 -45 49 27           ~ 1 0
96 [CMN2008] J164701.0-455350 X 16 47 01.0 -45 53 50           ~ 1 0
97 [CMN2008] J164701.0-455258 X 16 47 01.0 -45 52 58           ~ 1 0
98 2MASS J16470102-4549020 X 16 47 01.02 -45 49 02.0           ~ 1 0
99 2MASS J16470103-4550069 s*b 16 47 01.0295784432 -45 50 06.914814072           O9.5Iab 8 0
100 [CMN2008] J164701.1-455256 X 16 47 01.1 -45 52 56           ~ 1 0
101 [CMN2008] J164701.2-455457 X 16 47 01.2 -45 54 57           ~ 1 0
102 [CMN2008] J164701.2-455130 X 16 47 01.2 -45 51 30           ~ 1 0
103 Cl* Westerlund 1 W 59 LP? 16 47 01.4018401611 -45 51 50.717305812   23.1 18.97 16.33 13.64 ~ 5 0
104 Cl* Westerlund 1 BKS H s*y 16 47 01.4269856784 -45 50 37.248841536   18.781 14.47 11.80 9.15 F3Ia+ 29 0
105 Cl* Westerlund 1 W 234 V* 16 47 01.44 -45 52 35.0       15.25 12.85 O9.5Ib 8 0
106 [CMN2008] J164701.6-455130 X 16 47 01.6 -45 51 30           ~ 1 0
107 [CMN2008] J164701.7-455238 X 16 47 01.7 -45 52 38           ~ 1 0
108 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
109 [CMN2008] J164701.9-455148 X 16 47 01.9 -45 51 48           ~ 1 0
110 [CMN2008] J164702.0-455035 X 16 47 02.0 -45 50 35           ~ 1 0
111 [CMN2008] J164702.1-455151 X 16 47 02.1 -45 51 51           ~ 1 0
112 Cl* Westerlund 1 W 24 s*b 16 47 02.1561069816 -45 51 12.581922276   23.0 18.71 15.96 13.24 O9Iab 19 0
113 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
114 2MASS J16470235-4552340 * 16 47 02.3682085812 -45 52 34.343069997   22.6 18.96 16.43 13.81 O9-9.5I-III 8 0
115 Cl Westerlund 1 Cl* 16 47 02.4 -45 51 07           ~ 566 0
116 [CMN2008] J164702.5-460701 X 16 47 02.5 -46 07 01           ~ 1 0
117 Cl* Westerlund 1 W 62a LP? 16 47 02.5204504462 -45 51 38.051924860           B0.5Ib 10 0
118 Cl* Westerlund 1 W 61b s*b 16 47 02.5662082776 -45 51 41.864431536   22.7 18.59 16.00 13.31 O9.5Iab 17 0
119 Cl* Westerlund 1 W 47 s*b 16 47 02.64 -45 51 17.6   22.7 19.95 16.36 13.68 O9.5Iab 6 0
120 Cl* Westerlund 1 W 40a LP? 16 47 02.6756695632 -45 50 50.489371572   22.2 18.05 15.38 12.73 ~ 7 0
121 Cl* Westerlund 1 W 41 s*b 16 47 02.7105467198 -45 50 56.972033345   21.3 17.87 15.39 12.78 O9Iab 16 0
122 [CMN2008] C07-X4 s*b 16 47 02.7825906073 -45 52 12.594272925   23.5 19.29 16.69 14.09 O9.5Iab 8 0
123 [CMN2008] J164702.8-455252 X 16 47 02.8 -45 52 52           ~ 1 0
124 [CMN2008] J164702.8-455009 X 16 47 02.8 -45 50 09           ~ 1 0
125 Cl* Westerlund 1 W 38 s*b 16 47 02.8628531323 -45 50 46.145964246   23.2 19.10 16.47 13.81 O9Iab 12 0
126 [CMN2008] J164702.9-454935 X 16 47 02.9 -45 49 35           ~ 1 0
127 WR 77f WR* 16 47 02.9772955944 -45 50 19.713734556   21.552 17.792 15.035 12.508 WNL/BIa+ 33 0
128 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 19 0
129 WR 77g WR* 16 47 03.15 -45 50 43.8     19     WC8 16 0
130 [CMN2008] J164703.2-455013 X 16 47 03.2 -45 50 13           ~ 1 0
131 [CMN2008] J164703.2-455157 X 16 47 03.2 -45 51 57           ~ 1 0
132 Cl* Westerlund 1 W 42 s*b 16 47 03.2521856424 -45 50 52.195013052         10.764 B9Ia+ 19 0
133 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 18 0
134 [CMN2008] J164703.4-455213 X 16 47 03.4 -45 52 13           ~ 1 0
135 [CMN2008] J164703.4-455039 X 16 47 03.4 -45 50 39   23.1 19.55 16.71 13.95 ~ 1 0
136 [CMN2008] J164703.6-455051 X 16 47 03.6 -45 50 51           ~ 1 0
137 Cl* Westerlund 1 W 7 s*b 16 47 03.6281794392 -45 50 14.365482036   20.0 15.972 12.73 9.99 B5Ia+ 28 0
138 Cl* Westerlund 1 BKS F s*y 16 47 03.6850109472 -45 50 43.536110712     15.05     F5Ia+ 23 0
139 [CMN2008] J164703.7-455058 X 16 47 03.7 -45 50 58   20.4 18.35 16.18 13.66 ~ 1 0
140 [CMN2008] J164703.7-455023 X 16 47 03.7 -45 50 23           ~ 1 0
141 [CMN2008] J164703.7-454723 X 16 47 03.7 -45 47 23           ~ 1 0
142 Cl* Westerlund 1 W 31 s*b 16 47 03.7862784096 -45 50 40.366601376           B0I+OB 11 0
143 [CMN2008] J164703.8-455349 X 16 47 03.8 -45 53 49           ~ 1 0
144 Cl* Westerlund 1 W 65 * 16 47 03.8973039959 -45 51 46.495252717   22.9 18.73 16.27 13.68 O9Ib 12 0
145 Cl* Westerlund 1 CN G WR* 16 47 04.0152346631 -45 51 25.019757928   22.7 20.87 17.75 14.68 WN7o 22 0
146 [CMN2008] J164704.1-460710 X 16 47 04.1 -46 07 10           ~ 1 0
147 Cl* Westerlund 1 W 30 ** 16 47 04.1126936513 -45 50 39.164057275   22.4 18.45 15.80 13.20 O4-5Ia+ 23 0
148 Cl* Westerlund 1 W 33 s*b 16 47 04.1256274968 -45 50 48.488202564   20.090 15.61 12.803 10.04 B5Ia+ 23 0
149 Cl* Westerlund 1 W 9 WR* 16 47 04.1419806984 -45 50 31.311670632   21.8 17.47 14.47 11.74 sgB[e] 52 0
150 [CMN2008] J164704.2-455146 X 16 47 04.2 -45 51 46           ~ 1 0
151 WR 77k WR* 16 47 04.2072122904 -45 51 07.177760892   22.6 18.86 15.61 12.52 WN7 27 0
152 Cl* Westerlund 1 W 34 s*b 16 47 04.3941837044 -45 50 47.222852634   22.1 18.15 15.40 12.69 B0Ia 11 0
153 [CMN2008] J164704.4-455222 X 16 47 04.4 -45 52 22           ~ 1 0
154 [CMN2008] J164704.4-455220 X 16 47 04.4 -45 52 20           ~ 1 0
155 [CMN2008] J164704.4-455109 X 16 47 04.4 -45 51 09           ~ 3 0
156 Cl* Westerlund 1 W 238 s*b 16 47 04.4263582176 -45 52 27.788277972   21.4 17.820 14.98 12.45 B1Iab 16 0
157 [CMN2008] J164704.5-455018 X 16 47 04.5 -45 50 18           ~ 1 0
158 [CMN2008] J164704.5-455139 X 16 47 04.5 -45 51 39           ~ 1 0
159 [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 8 0
160 [CMN2008] J164704.6-455155 X 16 47 04.6 -45 51 55           ~ 1 0
161 [CMN2008] J164704.6-454902 X 16 47 04.6 -45 49 02           ~ 1 0
162 Cl* Westerlund 1 W 8 s*y 16 47 04.7959778348 -45 50 25.013789709   19.9 15.913 12.64 9.89 F8Ia+ 22 0
163 [CMN2008] J164704.9-455116 X 16 47 04.9 -45 51 16           ~ 1 0
164 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 12 0
165 Cl* Westerlund 1 W 27 s*b 16 47 05.1550269480 -45 50 41.418677508   21.5 17.94 15.35 12.80 O9I+OI 13 0
166 Cl* Westerlund 1 CN F WR* 16 47 05.2114579896 -45 52 24.985725096   21.7 17.86 15.39 12.90 WC9d 31 0
167 [CMN2008] J164705.3-455340 X 16 47 05.3 -45 53 40           ~ 1 0
168 Cl* Westerlund 1 CN B WR* 16 47 05.3717585660 -45 51 04.811705369     20.99 17.50 14.37 WN7o 30 0
169 [CMN2008] J164705.6-455210 X 16 47 05.6 -45 52 10           ~ 1 0
170 2MASS J16470575-4551334 LP? 16 47 05.7704715000 -45 51 33.477375888       19.907 16.182 ~ 3 0
171 Cl* Westerlund 1 W 25 s*b 16 47 05.7882476736 -45 50 33.368306136   21.9 17.85 15.22 12.61 O9Iab 11 0
172 Cl* Westerlund 1 CN R WR* 16 47 05.9726730842 -45 50 23.072495547       17.652 15.223 WN5o 21 0
173 Cl* Westerlund 1 CN E WR* 16 47 06.0667110144 -45 52 08.266249200     18.379 15.675 12.940 WC9 23 0
174 [CMN2008] J164706.2-454931 X 16 47 06.2 -45 49 31           ~ 1 0
175 Cl* Westerlund 1 W 17 s*b 16 47 06.2490500592 -45 50 49.292687328   22.7 18.87 16.19 13.56 O9Iab 18 0
176 Cl* Westerlund 1 CN D WR* 16 47 06.2554455566 -45 51 26.391243810       18.935 15.600 WN7o 21 0
177 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+ 26 0
178 Cl* Westerlund 1 W 13 WR* 16 47 06.4540771320 -45 50 26.072579796   21.1 17.19 14.63 12.06 WNL/BIa+ 35 0
179 WR 77s WR* 16 47 06.5427725380 -45 50 39.068951194   23.7 19.81 16.98 13.99 WN6o 16 0
180 [CMN2008] J164706.6-455308 X 16 47 06.6 -45 53 08           ~ 1 0
181 Cl* Westerlund 1 W 15 * 16 47 06.6306037464 -45 50 29.723762580   22.8 18.96 16.38 13.75 O9Ib 26 0
182 [CMN2008] J164706.7-455003 X 16 47 06.7 -45 50 03           ~ 1 0
183 [CMN2008] J164706.9-455201 X 16 47 06.9 -45 52 01           ~ 1 0
184 [CMN2008] J164706.9-455157 X 16 47 06.9 -45 51 57           ~ 1 0
185 [CMN2008] J164706.9-454833 X 16 47 06.9 -45 48 33           ~ 1 0
186 [CMN2008] J164707.0-455042 X 16 47 07.0 -45 50 42           ~ 1 0
187 [B2007] J164707.01-454940.1 * 16 47 07.01 -45 49 40.1       16.702 13.938 O9III 7 0
188 Cl* Westerlund 1 W 74 s*b 16 47 07.0783996992 -45 50 13.086504168       15.835 13.312 O9.5Iab 15 0
189 [CMN2008] J164707.4-454959 X 16 47 07.4 -45 49 59           ~ 1 0
190 Cl* Westerlund 1 W 243 s*b 16 47 07.5040736160 -45 52 29.123491188   19.873 15.730     LBV 61 0
191 WR 77sa WR* 16 47 07.6203489360 -45 49 22.068668640           WN6h 12 0
192 Cl* Westerlund 1 CN O WR* 16 47 07.6630825488 -45 52 35.964833052       16.886 14.047 WN6o 16 0
193 2MASS J16470780-4551479 * 16 47 07.8203317464 -45 51 47.911549536       16.940 13.939 B0Ib(+O?) 9 0
194 2MASS J16470822-4551368 X 16 47 08.2438247808 -45 51 36.841966848           ~ 1 0
195 WR 77sc WR* 16 47 08.3538521592 -45 50 45.414739212     19.69 16.59 13.68 WN7b 29 0
196 [CMN2008] J164708.6-455034 X 16 47 08.6 -45 50 34           ~ 1 0
197 [CMN2008] J164708.9-455029 X 16 47 08.93 -45 50 29.6           ~ 1 0
198 [CMN2008] J164709.0-455042 X 16 47 09.0 -45 50 42           ~ 1 0
199 [CMN2008] J164709.2-455214 X 16 47 09.2 -45 52 14           ~ 1 0
200 [CMN2008] J164709.2-455024 X 16 47 09.2 -45 50 24           ~ 1 0
201 [CMN2008] J164709.2-454941 X 16 47 09.2 -45 49 41           ~ 1 0
202 [CMN2008] J164709.4-455116 X 16 47 09.4 -45 51 16           ~ 1 0
203 [CMN2008] J164709.5-455040 X 16 47 09.5 -45 50 40           ~ 1 0
204 [CMN2008] J164709.7-455036 X 16 47 09.7 -45 50 36           ~ 1 0
205 [CMN2008] J164710.0-455049 X 16 47 10.0 -45 50 49           ~ 1 0
206 PSR J1647-4552 Psr 16 47 10.18 -45 52 16.7           ~ 198 1
207 [CMN2008] J164710.8-455246 X 16 47 10.8 -45 52 46           ~ 1 0
208 2MASS J16471090-4554197 * 16 47 10.9204759248 -45 54 19.597649832           ~ 1 0
209 [CMN2008] J164711.5-455000 s*b 16 47 11.5159397111 -45 49 59.878723928           O9.5Iab 7 0
210 2MASS J16471281-4554357 X 16 47 12.8414128608 -45 54 35.655178572           ~ 1 0
211 [CMN2008] J164713.0-454705 X 16 47 13.0395850296 -45 47 05.516675844           ~ 1 0
212 2MASS J16471326-4554137 X 16 47 13.2804517416 -45 54 13.489424424           ~ 1 0
213 [CMN2008] J164713.5-455156 X 16 47 13.5 -45 51 56           ~ 1 0
214 [B2007] J164713.62-454857.0 * 16 47 13.6386005184 -45 48 57.112077816   19.557 17.289 16.020 14.563 ~ 2 0
215 [B2007] J164714.19-454800.7 * 16 47 14.2106161875 -45 48 00.712369566     18.134     ~ 3 0
216 [CMN2008] J164714.3-454725 X 16 47 14.3 -45 47 25           ~ 1 0
217 [CMN2008] J164714.4-455101 X 16 47 14.4 -45 51 01           ~ 1 0
218 2MASS J16471442-4547549 * 16 47 14.4409737528 -45 47 54.799316988           ~ 1 0
219 [CMN2008] J164715.0-454843 X 16 47 15.0 -45 48 43           ~ 1 0
220 [CMN2008] J164715.6-454924 X 16 47 15.6 -45 49 24           ~ 1 0
221 [CMN2008] J164716.2-454721 X 16 47 16.34 -45 47 21.2           ~ 1 0
222 [CMN2008] J164716.6-454846 X 16 47 16.6 -45 48 46           ~ 1 0
223 [CMN2008] J164716.9-454925 X 16 47 16.9 -45 49 25           ~ 1 0
224 [CMN2008] J164717.9-455403 X 16 47 17.9 -45 54 03           ~ 1 0
225 [CMN2008] J164718.1-455125 X 16 47 18.1 -45 51 25           ~ 1 0
226 [B2007] J164718.17-455029.3 * 16 47 18.1773901632 -45 50 29.302838772     19.387     ~ 2 0
227 [CMN2008] J164718.7-454758 X 16 47 18.72 -45 47 58.3   19.316 17.758     ~ 2 0
228 [CMN2008] J164719.7-455529 X 16 47 19.7 -45 55 29           ~ 1 0
229 [CMN2008] J164720.1-455138 X 16 47 20.1 -45 51 38           ~ 1 0
230 [CMN2008] J164720.3-455019 X 16 47 20.3 -45 50 19           ~ 1 0
231 [CMN2008] J164720.3-454854 X 16 47 20.42 -45 48 54.5     16.523     ~ 2 0
232 [CMN2008] J164720.9-454940 X 16 47 20.88 -45 49 40.7           ~ 1 0
233 [CMN2008] J164721.2-455139 X 16 47 21.2 -45 51 39           ~ 1 0
234 2MASS J16472131-4549594 * 16 47 21.3128104933 -45 49 59.261617986           ~ 2 0
235 [CMN2008] J164722.4-454851 X 16 47 22.4 -45 48 51           ~ 1 0
236 [CMN2008] J164723.5-455605 X 16 47 23.5 -45 56 05           ~ 1 0
237 2MASS J16472481-4546215 * 16 47 24.8120734296 -45 46 21.526125744           ~ 2 0
238 [CMN2008] J164725.8-455102 X 16 47 25.8 -45 51 02           ~ 1 0
239 [CMN2008] J164726.8-454959 X 16 47 26.8 -45 49 59           ~ 1 0
240 [CMN2008] J164728.0-455110 X 16 47 28.0 -45 51 10           ~ 1 0
241 [CMN2008] J164728.3-455505 X 16 47 28.3 -45 55 05           ~ 1 0
242 2MASS J16472882-4549048 * 16 47 28.8205974624 -45 49 04.894831416           ~ 1 0
243 [CMN2008] J164730.3-455954 X 16 47 30.3 -45 59 54           ~ 1 0
244 [CMN2008] J164730.3-454938 X 16 47 30.3 -45 49 38           ~ 1 0
245 [CMN2008] J164730.5-454914 X 16 47 30.5 -45 49 14           ~ 1 0
246 [CMN2008] J164731.7-455336 X 16 47 31.7 -45 53 36           ~ 1 0
247 2MASS J16473225-4557590 * 16 47 32.2503939984 -45 57 58.951883376           ~ 1 0
248 [CMN2008] J164734.4-454943 X 16 47 34.4 -45 49 43           ~ 1 0
249 [CMN2008] J164735.5-455113 X 16 47 35.5 -45 51 13           ~ 1 0
250 [CMN2008] J164735.8-454656 X 16 47 35.8 -45 46 56           ~ 1 0
251 [CMN2008] J164736.0-454744 X 16 47 36.0 -45 47 44           ~ 1 0
252 [CMN2008] J164737.1-454920 X 16 47 37.1 -45 49 20           ~ 1 0
253 [CMN2008] J164737.4-455744 X 16 47 37.4 -45 57 44           ~ 1 0
254 [CMN2008] J164743.6-455214 X 16 47 43.6 -45 52 14           ~ 1 0
255 2MASS J16474497-4554597 * 16 47 44.9755790040 -45 54 59.745877776           ~ 1 0
256 [CMN2008] J164745.4-454649 X 16 47 45.4 -45 46 49           ~ 1 0
257 WR 77-3 WR* 16 47 46.0380559344 -45 59 04.861461480           WN6 3 0
258 HD 151159 ** 16 47 48.2905 -45 44 09.542   9.40 9.25 9.16   B9V 10 0
259 [CMN2008] J164748.4-454905 X 16 47 48.4 -45 49 05           ~ 1 0
260 [CMN2008] J164749.1-454930 X 16 47 49.1 -45 49 30           ~ 1 0
261 [CMN2008] J164750.5-455540 X 16 47 50.5 -45 55 40           ~ 1 0
262 2MASS J16475337-4546509 * 16 47 53.3758224792 -45 46 50.965610556           ~ 1 0
263 [CMN2008] J164759.8-455901 X 16 47 59.8 -45 59 01           ~ 1 0
264 HD 151196 * 16 48 05.5410463848 -45 56 41.697526200   7.03 6.69     F2IV 28 0
265 NGC 6231 OpC 16 54 10.8 -41 48 43           ~ 538 0
266 * bet Dra * 17 30 25.9616959 +52 18 04.999351 4.43 3.79 2.81 2.12 1.64 G2Ib-IIa 415 0
267 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 737 0
268 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 525 0
269 [FMM95] 3 s*b 17 46 15.240 -28 50 03.58           LBV 148 1
270 [GMC99] D6 s*b 17 46 17.982 -28 49 03.46           LBV 62 0
271 PSR J1808-2024 Psr 18 08 39.32 -20 24 40.1           ~ 1240 2
272 IGR J18410-0535 HXB 18 41 00.4353543192 -05 35 46.474692324   15.91   13.645 11.631 B1Ib 137 0
273 IGR J18450-0435 HXB 18 45 01.5900617304 -04 33 56.643032844   16.278 14.115 13.467 11.42 O9.5I 91 0
274 GBS 1900+14 gB 19 07 13 +09 19.6           ~ 857 0
275 SS 433 HXB 19 11 49.5647697480 +04 58 57.827127648   16.854 14.643     A3/7I 2124 4
276 * P Cyg s*b 20 17 47.2019733389 +38 01 58.549132671 4.66 5.24 4.82 4.28 4.02 B1-2Ia-0ep 1176 1
277 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 943 0
278 Cl* Westerlund 1 W 16b * ~ ~           ~ 3 0

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