Fig. 2
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Verification of the selection criterion using the OGLE LMC sample (Soszyński et al. 2007). The period-amplitude cutoff marked with dashed line is the same as in Fig. 1. The objects selected with the cutoff (upper panel) are placed on the PL diagram (lower panel). For the PL diagram, we use the redenig-free Wesenheit index WI = V − 1.55(V − I).
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