The spatial distribution of XRBs and candidates from the XMM LP-total catalogue. The positions of the XRBs and candidates are marked with yellow dots; the two XRB candidates classified from their variability compared with ROSAT observations are marked with blue dots. An increase in the number density of sources in the central field is clearly visible. In addition the two new HMXB candidates presented in Sect. 10.3.2 (red dots), and the three HMXB candidates of SBK2009 that satisfy our U − B/B − V selectrion criterion (green dots, see Sect. 10.3.2) are shown. XRBs which correlate with globular clusters are shown in Fig. 31.
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