Fig. 3.
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Colour-magnitude (J, J − Ks) diagram of 1° ×1° field centred around ℓ = 251° and b = 0° (upper panel) and ℓ = 45° and b = 5° (lower panel) in grey crosses. RC stars in the APOGEE value-added catalogue and L20 tier1 and tier2 RC stars are over-plotted as open blue circles in the respective panels. RC stars selected by our method are represented by red points.
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