Abundance analysis of 4 red giants in NGC 6558
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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...
NGC 6558是一个拥有蓝水平分支（blue horizontal branch，BHB）的核球球状星团，其金属丰度为[Fe/H]≈-1.0。该星团与HP 1及NGC 6522较为相似，这类星团可能属于……
