Fig. 6
Data sample distribution. The black points are the 13 143 BHB candidates selected in this work. We confirm that these samples are contaminated by at least 76 main-sequence stars (red circles), 311 blue straggler (green points), and 227 other objects (yellow points) (Xue et al. 2008). The seven globular star clusters listed in Table 1 are marked by blue circles.
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