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Table 1

The X-ray sources detected by our analysis towards the Fornax dSph.

Src # RA Dec Err H R1 H R2 2MASS USNO-B1
(J2000) (J2000) (arcsec) ( × 10-14 cgs) (arcsec) (arcsec)
1 E 2 40 50.8 –34 27 24.9 3.2 –0.17  ±  0.28 –0.59  ±  0.38 0.22  ±  0.16 1.5
2 E 2 39 54.5 –34 30 41.2 2.6 –0.16  ±  0.33 –0.19  ±  0.33 0.28  ±  0.22
3 E 2 39 46.9 –34 29 11.2 2.5 –0.50  ±  0.42 0.26  ±  0.41 0.30  ±  0.23
4 E 2 40 47.6 –34 20 11.3 2.8 –0.15  ±  0.41 –0.62  ±  0.39 0.31  ±  0.78 3.3
5 E 2 39 59.3 –34 31 3.6 2.6 –0.14  ±  0.39 0.23  ±  0.37 0.31  ±  0.20
6 E 2 39 56.1 –34 21 16.4 2.8 –0.18  ±  0.37 –0.32  ±  0.38 0.35  ±  0.29 0.9 0.9
7 (*) E 2 40 32.0 –34 27 50.9 2.4 0.01  ±  0.19 –0.81  ±  0.25 0.36  ±  0.26
8 C 2 39 39.4 –34 22 58.0 2.4 –0.07  ±  0.40 –0.07  ±  0.36 0.37  ±  0.31
9 G 2 39 55.6 –34 25 53.8 2.7 0.03  ±  0.37 0.18  ±  0.35 0.41  ±  0.22
10 D 2 39 39.1 –34 32 21.9 2.3 –0.32  ±  0.27 –0.33  ±  0.29 0.46  ±  0.40 1.0 1.4
11 E 2 39 56.3 –34 22 33.4 2.7 0.18  ±  0.31 0.04  ±  0.28 0.49  ±  0.21
12 E 2 39 34.9 –34 33 29.6 2.8 0.03  ±  0.32 –0.27  ±  0.31 0.52  ±  0.48
13 E 2 39 28.5 –34 22 29.5 2.8 0.28  ±  0.43 0.26  ±  0.33 0.55  ±  0.48
14 G 2 39 50.2 –34 33 60.0 2.1 –0.01  ±  0.35 –0.05  ±  0.30 0.75  ±  0.73
15 A 2 40 20.4 –34 24 25.5 2.1 –0.10  ±  0.23 –0.12  ±  0.23 0.75  ±  0.32
16 D 2 40 21.5 –34 23 47.1 2.3 –0.05  ±  0.29 –0.05  ±  0.27 0.83  ±  0.40
17 D 2 40 38.0 –34 36 0.3 2.2 –0.09  ±  0.44 –0.01  ±  0.33 0.84  ±  0.81
18 E 2 40 19.3 –34 19 0.2 2.5 –0.06  ±  0.29 –0.19  ±  0.26 0.84  ±  0.52
19 (*) E 2 40 27.0 –34 30 24.3 2.4 0.06  ±  0.24 –0.23  ±  0.24 0.85  ±  0.39 1.3 1.7
20 A 2 39 38.5 –34 30 14.0 2.3 –0.18  ±  0.28 –0.24  ±  0.27 0.87  ±  0.50
21 D 2 40 46.0 –34 21 28.8 2.5 0.05  ±  0.42 –0.30  ±  0.39 0.92  ±  0.83
22 A 2 40 12.3 –34 29 0.1 2.3 –0.15  ±  0.32 0.03  ±  0.29 0.93  ±  0.47
23 D 2 39 17.7 –34 16 53.9 2.3 –0.33  ±  0.39 0.14  ±  0.30 0.95  ±  0.83
24 G 2 38 58.1 –34 29 22.0 2.2 –0.28  ±  0.47 0.13  ±  0.36 0.95  ±  1.15
25 E 2 39 54.5 –34 22 6.7 2.5 0.10  ±  0.29 0.02  ±  0.24 0.96  ±  0.36
26 E 2 39 4.1 –34 37 22.7 2.5 –0.31  ±  0.26 –0.24  ±  0.25 0.98  ±  0.75
27 C 2 39 32.4 –34 29 51.8 2.2 –0.11  ±  0.25 –0.37  ±  0.29 0.99  ±  0.50
28 A 2 40 8.8 –34 31 36.4 2.2 –0.16  ±  0.22 –0.06  ±  0.21 1.01  ±  0.40
29 E 2 39 50.7 –34 40 36.3 2.3 0.05  ±  0.18 –0.93  ±  0.21 1.03  ±  0.92
30 G 2 40 25.9 –34 19 58.9 2.4 0.07  ±  0.47 0.43  ±  0.38 1.04  ±  0.70
31 C 2 40 18.9 –34 27 23.3 2.4 0.16  ±  0.30 0.10  ±  0.22 1.10  ±  0.44
32 E 2 39 33.2 –34 26 41.4 2.7 0.42  ±  0.36 0.10  ±  0.28 1.10  ±  0.44
33 D 2 39 20.2 –34 27 16.0 2.2 –0.08  ±  0.20 –0.25  ±  0.22 1.12  ±  0.52
34 A 2 39 41.4 –34 24 45.5 2.2 –0.12  ±  0.36 0.09  ±  0.30 1.22  ±  0.67
35 D 2 40 30.4 –34 32 46.5 2.5 0.09  ±  0.32 –0.08  ±  0.26 1.26  ±  0.70
36 E 2 40 35.1 –34 36 28.8 2.5 0.16  ±  0.36 –0.45  ±  0.35 1.26  ±  1.02
37 A 2 40 11.2 –34 30 51.4 2.2 –0.01  ±  0.24 0.02  ±  0.22 1.27  ±  0.45
38 A 2 39 37.7 –34 36 56.8 2.3 –0.21  ±  0.27 –0.08  ±  0.23 1.33  ±  0.63
39 A 2 40 4.5 –34 28 55.1 2.3 –0.27  ±  0.14 –0.17  ±  0.15 1.41  ±  0.37
40 C 2 39 18.8 –34 26 43.4 2.5 0.08  ±  0.28 –0.11  ±  0.25 1.45  ±  0.72 2.5 2.0
41 (*) A 2 39 25.5 –34 17 35.0 2.1 –0.05  ±  0.18 –0.73  ±  0.22 1.51  ±  1.11 2.4 2.0
42 A 2 40 33.4 –34 25 12.6 2.2 0.03  ±  0.26 0.00  ±  0.21 1.62  ±  0.65
43 E 2 40 3.4 –34 21 5.3 2.1 –0.16  ±  0.13 –0.15  ±  0.12 1.63  ±  0.41
44 E 2 40 1.5 –34 17 51.0 2.3 0.01  ±  0.21 –0.07  ±  0.18 1.70  ±  0.67
45 E 2 40 32.4 –34 18 1.9 2.6 0.36  ±  0.39 0.25  ±  0.32 1.73  ±  0.85
46 A 2 40 19.6 –34 32 52.7 2.1 –0.16  ±  0.17 –0.19  ±  0.17 1.76  ±  0.70 0.1 1.1
47 E 2 39 28.5 –34 33 20.0 4.4 –0.03  ±  0.31 –0.51  ±  0.33 1.79  ±  1.50
48 A 2 40 25.9 –34 33 28.2 2.1 –0.14  ±  0.12 –0.55  ±  0.15 1.86  ±  0.71 1.4 1.4
49 D 2 38 55.4 –34 30 0.3 2.6 –0.07  ±  0.28 –0.16  ±  0.25 1.89  ±  1.18
50 D 2 39 35.0 –34 32 7.8 2.2 –0.06  ±  0.22 –0.02  ±  0.18 1.95  ±  0.87
51 D 2 39 37.7 –34 19 58.1 2.4 0.61  ±  0.31 0.13  ±  0.22 1.99  ±  0.80
52 G 2 39 44.5 –34 18 27.6 2.2 –0.32  ±  0.18 –0.02  ±  0.17 2.00  ±  0.71
53 F 2 39 25.5 –34 21 21.3 2.3 –0.08  ±  0.35 –0.15  ±  0.34 2.01  ±  1.25 1.9
54 E 2 40 19.0 –34 34 43.8 2.4 0.26  ±  0.28 0.00  ±  0.17 2.02  ±  0.80
55 D 2 39 5.1 –34 18 52.9 2.3 0.13  ±  0.33 –0.68  ±  0.37 2.12  ±  1.82 0.7
56 D 2 40 37.5 –34 24 3.6 2.3 0.05  ±  0.21 –0.09  ±  0.18 2.12  ±  0.74
57 G 2 39 38.6 –34 20 21.6 2.1 0.27  ±  0.39 –0.26  ±  0.35 2.16  ±  1.15 2.2
58 E 2 39 13.4 –34 22 38.8 2.6 –0.03  ±  0.30 0.10  ±  0.21 2.21  ±  0.97
59 C 2 39 43.7 –34 30 40.5 2.3 0.48  ±  0.29 0.26  ±  0.20 2.25  ±  0.65
60 E 2 38 57.2 –34 26 30.0 2.7 0.20  ±  0.38 0.14  ±  0.25 2.26  ±  1.40
61(V) A 2 39 41.4 –34 33 38.0 2.1 –0.10  ±  0.16 –0.20  ±  0.17 2.28  ±  0.71
62 G 2 40 47.3 –34 29 7.7 2.0 0.64  ±  0.30 0.17  ±  0.18 2.31  ±  1.28
63 A 2 40 45.6 –34 33 50.1 2.1 –0.16  ±  0.26 0.00  ±  0.19 2.36  ±  1.25
64 E 2 39 33.0 –34 21 11.1 2.6 0.46  ±  0.27 0.05  ±  0.19 2.46  ±  0.74
65 A 2 40 43.4 –34 25 16.7 2.2 –0.10  ±  0.20 –0.19  ±  0.19 2.48  ±  1.02 2.4
66 A 2 39 58.0 –34 28 17.0 2.1 0.21  ±  0.23 0.36  ±  0.16 2.52  ±  0.57
67 B 2 40 29.4 –34 25 10.3 2.1 0.12  ±  0.30 0.37  ±  0.22 2.53  ±  0.91
68 E 2 38 58.1 –34 34 2.5 3.0 0.10  ±  0.38 –0.13  ±  0.26 2.64  ±  1.85
69 B 2 40 58.6 –34 23 56.6 2.3 –0.12  ±  0.19 –0.31  ±  0.22 2.67  ±  1.05 0.6
70 D 2 40 52.0 –34 29 45.7 2.1 0.30  ±  0.37 –0.06  ±  0.24 2.68  ±  1.26
71 G 2 39 58.5 –34 13 49.7 2.2 0.07  ±  0.32 0.13  ±  0.24 2.76  ±  1.61
72 B 2 40 58.0 –34 30 9.5 2.1 0.03  ±  0.29 –0.09  ±  0.25 2.99  ±  1.62
73 D 2 39 48.5 –34 17 16.6 2.3 0.24  ±  0.30 0.36  ±  0.22 3.01  ±  1.01 2.0
74 D 2 39 40.4 –34 20 2.5 2.2 –0.05  ±  0.18 0.17  ±  0.15 3.33  ±  0.87
75 A 2 39 52.6 –34 34 26.2 2.3 –0.11  ±  0.23 0.03  ±  0.19 3.58  ±  1.19 1.1 0.7
76 G 2 41 2.6 –34 28 48.8 2.1 0.01  ±  0.41 0.45  ±  0.29 3.81  ±  2.00 1.4
77 B 2 39 13.2 –34 17 28.9 2.2 –0.05  ±  0.34 0.18  ±  0.28 3.87  ±  2.12
78 G 2 41 3.8 –34 29 9.4 2.1 –0.04  ±  0.32 –0.05  ±  0.25 3.96  ±  2.09
79 A 2 40 8.6 –34 23 21.6 2.1 –0.10  ±  0.11 –0.03  ±  0.10 4.09  ±  0.64
80 A 2 39 43.2 –34 33 37.5 2.1 0.21  ±  0.22 0.33  ±  0.16 4.17  ±  1.05
81 D 2 39 14.4 –34 34 0.1 2.3 0.80  ±  0.23 0.01  ±  0.14 4.39  ±  1.62
82 (*) A 2 39 34.0 –34 21 51.1 2.0 –0.24  ±  0.09 –0.27  ±  0.09 4.41  ±  0.66 0.4 0.8
83 A 2 39 21.4 –34 34 26.7 2.2 0.04  ±  0.25 0.20  ±  0.20 4.45  ±  1.68
84 A 2 40 33.7 –34 27 3.7 2.1 –0.22  ±  0.07 –0.44  ±  0.09 4.71  ±  0.63 1.7 1.7
85 A 2 40 32.1 –34 36 39.2 2.1 0.03  ±  0.24 0.29  ±  0.18 4.96  ±  1.77
86 A 2 39 43.9 –34 26 15.9 2.2 0.79  ±  0.21 0.00  ±  0.14 5.12  ±  0.97 0.7 1.2
87 C 2 39 49.2 –34 32 35.2 2.1 0.11  ±  0.16 0.06  ±  0.12 5.39  ±  1.16
88 D 2 39 3.6 –34 24 40.2 2.4 0.25  ±  0.32 0.25  ±  0.23 5.91  ±  2.53
89 E 2 38 56.5 –34 32 14.3 2.5 0.24  ±  0.25 0.15  ±  0.17 6.09  ±  1.96
90 E 2 39 3.5 –34 36 39.1 2.1 –0.04  ±  0.14 –0.18  ±  0.12 6.28  ±  1.90 1.7
91 F 2 39 17.9 –34 31 59.8 2.2 0.47  ±  0.31 0.04  ±  0.20 6.44  ±  2.18
92 A 2 39 13.0 –34 17 8.3 2.2 –0.12  ±  0.18 –0.09  ±  0.16 6.80  ±  2.37 0.7
93 E 2 39 24.7 –34 32 33.2 3.9 –0.19  ±  0.20 –0.22  ±  0.15 6.87  ±  3.60
94 G 2 40 10.0 –34 12 30.6 2.2 0.11  ±  0.26 0.30  ±  0.19 7.70  ±  2.68
95 A 2 39 8.1 –34 18 20.1 2.1 –0.11  ±  0.17 0.16  ±  0.13 8.06  ±  2.27
96 G 2 39 43.3 –34 14 21.3 2.2 0.13  ±  0.22 0.03  ±  0.16 8.28  ±  2.55
97 A 2 40 8.1 –34 34 19.7 2.0 –0.13  ±  0.08 –0.22  ±  0.08 8.69  ±  1.26 2.2
98 C 2 39 23.4 –34 33 15.8 2.1 0.49  ±  0.16 0.19  ±  0.11 8.87  ±  1.72
99 A 2 39 3.4 –34 31 55.4 2.2 0.40  ±  0.22 0.25  ±  0.14 8.97  ±  2.49 2.0
100 G 2 40 14.6 –34 12 59.9 2.2 –0.17  ±  0.12 –0.26  ±  0.13 10.04  ±  2.98
101 A 2 39 12.4 –34 18 16.9 2.1 –0.06  ±  0.13 0.12  ±  0.10 10.05  ±  2.19
102 A 2 39 15.3 –34 35 28.3 2.0 –0.05  ±  0.12 –0.06  ±  0.10 10.70  ±  2.34 2.0 1.6
103 G 2 39 49.2 –34 14 19.2 2.1 0.04  ±  0.13 –0.16  ±  0.12 11.69  ±  2.59
104 D 2 39 49.0 –34 19 58.8 2.0 –0.10  ±  0.05 –0.27  ±  0.05 12.58  ±  1.01 1.7
105 A 2 39 32.8 –34 25 25.1 2.0 –0.10  ±  0.05 –0.18  ±  0.06 13.14  ±  1.05 1.2
106 E 2 40 39.0 –34 38 58.6 2.0 0.00  ±  0.05 –0.20  ±  0.06 23.52  ±  2.34 2.4
107 (*)M A 2 40 19.0 –34 37 19.9 2.0 –0.05  ±  0.07 –0.08  ±  0.07 24.79  ±  3.06 0.5 1.0

Notes. 

(*)

An asterix close to the X-ray source label means that the source is possibly associated (within 1σ) with a counterpart found in the position and proper motions extended catalog (PPMX, see Roeser et al. 2008), thus implying a possible foreground source.

(V)

When correlating the X-ray sources with the available catalogs, we found that source number 61 is possibly associated, within 2.0″, to one (J023941.4-343340) belonging to a catalog of variable stars (Bersier & Wood 2002), see text for details.

(M)

The X-ray source labeled as 107 also correlates (within 1.0″) with a source in the 2MASX (Skrutskie et al. 2006) and is possibly associated to a background AGN (QJ0240-3437, see also Mendez et al. (2011) where this quasar has been considered as a reference object for measuring the proper motion of sources belonging to the Fornax dSph). As a consequence, source 107 may have been erroneously reported in the PPMX catalog (source labeled as 024019.0-343719).

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