188 citations · 838 across the 20 of their papers we have counts for
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B. Barbuy, L. Muniz, S. Ortolani +8
NGC 6558 is a bulge globular cluster with a blue horizontal branch (BHB), combined with a metallicity of [Fe/H]~-1.0. It is similar to HP 1 and NGC 6522, which could be among the o…