2004A&A...424..133W

Query : 2004A&A...424..133W

2004A&A...424..133W - Astronomy and Astrophysics, volume 424133-143 (2004/9-2)

X-ray sources and their optical counterparts in the globular cluster M22.

WEBB N.A., SERRE D., GENDRE B., BARRET D., LASOTA J.-P. and RIZZI L.

Abstract (from CDS):

Using XMM-Newton EPIC imaging data, we have detected 50 low-luminosity X-ray sources in the field of view of M 22, where 5±3 of these sources are likely to be related to the cluster. Using differential optical photometry, we have identified probable counterparts to those sources belonging to the cluster. Using X-ray spectroscopic and timing studies, supported by the optical colours, we propose that the most central X-ray sources in the cluster are cataclysmic variables, millisecond pulsars, active binaries and a blue straggler. We also identify a cluster of galaxies behind this globular cluster.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: globular clusters: individual: M22 - X-rays: general - stars: binaries: general - galaxies: clusters: general

Nomenclature: Table 1: [WSG2004] NN N=51 among (Nos 5-78).

Simbad objects: 58

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Number of rows : 58
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 PSR J1210-5226 Psr 12 10 00.88 -52 26 28.4           ~ 230 1
3 RBS 1223 N* 13 08 48.7 +21 27 08   28.6 28.6     ~ 163 1
4 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 780 0
5 SAX J1808.4-3658 LXB 18 08 27.58 -36 58 43.9           ~ 1051 0
6 [WSG2004] 11 X 18 35 29.99 -23 58 45.0           ~ 1 0
7 [WSG2004] 35 CV* 18 35 30.2 -23 54 33           ~ 2 0
8 [WSG2004] 9 X 18 35 39.66 -23 56 50.2           ~ 1 0
9 [WSG2004] 24 X 18 35 42.39 -23 56 38.7           ~ 1 0
10 [WSG2004] 70 X 18 35 42.87 -23 57 20.1           ~ 1 0
11 [WGB2002] d X 18 35 43.0 -23 48 18           ~ 2 0
12 [WSG2004] 78 CV* 18 35 44.5 -24 00 11           ~ 2 0
13 2E 1832.8-2349 X 18 35 51.2 -23 46 44           ~ 6 1
14 [WGB2002] 22 X 18 35 55.6 -23 57 14           ~ 2 0
15 [WGB2002] 6 X 18 35 56.8 -23 49 21           ~ 2 0
16 [WGB2002] 17 X 18 35 59.1 -23 54 58           ~ 2 0
17 [JVH94] NGC 6656 7 X 18 36 00.9 -24 04 14           ~ 3 0
18 [WSG2004] 72 X 18 36 01.29 -23 46 18.5           ~ 1 0
19 [WSG2004] 49 X 18 36 01.47 -23 57 52.7           ~ 1 0
20 [WGB2002] 20 X 18 36 03.0 -23 55 21           ~ 4 0
21 [WGB2002] 8 X 18 36 05.640 -23 50 50.27           ~ 3 0
22 [WGB2002] 24 X 18 36 08.5 -23 59 14           ~ 2 0
23 HD 171495 * 18 36 10.4758045378 -23 46 27.457447555   11.02 10.63     A 10 0
24 [WSG2004] 18 X 18 36 13.58 -23 48 37.0           ~ 1 0
25 [WGB2002] b X 18 36 14.1 -23 41 39           ~ 2 0
26 [WSG2004] 55 X 18 36 14.93 -23 55 39.9           ~ 2 0
27 [WGB2002] 3 * 18 36 15.1949212416 -23 46 14.330923248           ~ 3 0
28 [WGB2002] 9 X 18 36 15.440 -23 50 56.80           ~ 3 0
29 [WSG2004] 28 X 18 36 16.88 -23 41 34.1           ~ 1 0
30 [WGB2002] 19 CV* 18 36 18.310 -24 00 55.88           ~ 4 0
31 [WGB2002] 11 CV* 18 36 18.400 -23 52 17.19           ~ 4 0
32 [WSG2004] 73 X 18 36 21.040 -23 49 19.50           ~ 2 0
33 [WGB2002] 13 X 18 36 21.700 -23 53 34.99           ~ 3 0
34 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
35 [WGB2002] 1 X 18 36 24.0 -24 02 21           ~ 2 0
36 OGLE BLG-DN-1057 CV* 18 36 24.696 -23 54 35.60     18.77   16.224 ~ 26 0
37 [WGB2002] 18 CV* 18 36 24.860 -23 55 14.92           ~ 4 0
38 [WSG2004] 71 X 18 36 25.500 -23 59 09.31           ~ 2 0
39 2MASS J18362712-2406189 X 18 36 27.12 -24 06 19.0           ~ 3 0
40 [WGB2002] 2 X 18 36 27.680 -23 45 06.61           ~ 3 0
41 [WGB2002] 21 CV* 18 36 28.290 -23 56 24.64           ~ 4 0
42 [WGB2002] 5 X 18 36 34.630 -23 49 29.11           ~ 3 0
43 [WSG2004] 42 X 18 36 35.08 -23 59 16.1           ~ 1 0
44 2MASS J18363838-2354474 * 18 36 38.3922305208 -23 54 47.571014160           ~ 3 0
45 [WGB2002] 14 X 18 36 39.060 -23 53 46.63           ~ 3 0
46 [WSG2004] 14 X 18 36 40.67 -23 40 50.5           ~ 1 0
47 [WGB2002] 10 CV* 18 36 45.70 -23 51 59.2           ~ 3 0
48 [JVH94] NGC 6656 9 X 18 36 48.70 -23 48 08.7           ~ 3 0
49 [WGB2002] a X 18 36 50.5 -23 41 25           ~ 2 0
50 [WSG2004] 63 X 18 36 51.85 -24 00 14.5           ~ 1 0
51 [WSG2004] 76 X 18 36 52.76 -23 54 07.0           ~ 1 0
52 [WSG2004] 77 X 18 36 52.80 -23 58 58.2           ~ 1 0
53 [WSG2004] 67 X 18 36 58.62 -23 44 55.8           ~ 1 0
54 [WGB2002] 25 X 18 37 00.46 -24 00 23.4           ~ 3 0
55 [WGB2002] 23 X 18 37 00.560 -23 58 29.70           ~ 3 0
56 [WSG2004] 75 X 18 37 10.17 -23 52 26.6           ~ 1 0
57 [WSG2004] 66 X 18 37 22.41 -23 54 43.4           ~ 1 0
58 PSR J1959+2048 Psr 19 59 36.7643141520 +20 48 14.896407996   21.08 20.16 19.53 18.79 G: 854 3

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