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Fig. 12.

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Left: Hertzsprung–Russell diagram (HRD) of four selected isochrones, with metallicity spanning from 0.001 − 0.002 and age ranges from 11 − 13 Gyr. Right: Seismic diagram corresponding to the HRD on the left side. The inset is a zoom-in of the region of the RGB bump. The horizontal bars mark the maximum and minimum of the bump.

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