Fig. 6
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Comparison of theoretical SBCRs based on atmosphere models with metallicity of [Fe/H] = 0.0 and [Fe/H] = -0.5, respectively. The empirical SBCRs from Paper I, Paper II, and Pietrzynski et al. (2019) are overplotted for comparison. The difference in the derived angular diameter θLD (in %) using the two theoretical relations of different metallicity is shown in the bottom panel.
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