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Fig. 4.
Same as Fig. 3 but MS tracks are replaced by loci for the zero- and terminal-age horizontal branch (ZAHB, TAHB) for a helium abundance of 0.247 and [Fe/H] = − 1.48 from Dorman et al. (1993). Stars with v sin(i) < 50 km s−1 are displayed in gray.
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