Navegação Ciências Exatas e da Terra por Assunto "Globular clusters: individual (NGC 6522, NGC 6626, NGC 6362)"
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Ages of the bulge globular clusters NGC 6522 and NGC 6626 (M28) from HST proper-motion-cleaned color–magnitude diagrams
(2018) [Artigo de periódico]Bulge globular clusters (GCs) with metallicities [Fe/H]−1.0 and blue horizontal branches are candidates to harbor the oldest populations in the Galaxy. Based on the analysis of HST proper-motion-cleaned color–magnitude ...