Table 3: Sample of Optical/X-ray coincidences.
Source $\alpha$ $\delta$ $L_{\rm X}$ B (B-I)
3 04:31:39.71 -05:04:56.6 30.1 24.85 1.82
7 04:31:38.30 -05:05:36.7 30.8 24.56 2.10
8 04:31:41.23 -05:05:43.0 19.7 24.21 1.56
9 04:31:37.33 -05:04:57.2 14.3 24.40 2.11
11 04:31:37.31 -05:05:36.0 5.9 24.59 1.87
12 04:31:41.99 -05:05:50.8 8.4 25.08 1.80
13 04:31:41.50 -05:04:21.0 6.3 24.34 1.56
14 04:31:39.81 -05:04:07.1 15.0 24.58 1.94
16 04:31:35.17 -05:05:02.6 39.0 24.24 1.57
21 04:31:34.25 -05:04:31.1 22.8 24.53 2.29
25 04:31:41.61 -05:06:53.5 52.0 24.29 1.44
38 04:31:48.60 -05:04:15.9 5.5 24.49 1.85
40 04:31:49.86 -05:05:39.7 13.0 21.94 1.93
41 04:31:47.07 -05:03:08.7 11.9 24.58 1.35
55 04:31:53.68 -05:04:08.6 108.3 24.69 2.14
59 04:31:53.06 -05:06:59.0 19.2 23.78 2.56
Column 1: source identification number given by Table 2 of Sivakoff et al. (2004); Columns 2 and 3: equatorial coordinates (J2000) of X-ray sources, given by Sivakoff et al. (2004); Col. 4: X-ray luminosity in units of 1038 erg/s; Cols. 5 and 6: calibrated B magnitude and (B-I) colour from this work.

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