Global and nonglobal parameters of horizontal-branch morphology of globular clusters
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Milone, Antonino
Marino, Anna
Dotter, Aaron
Norris, John
Jerjen, Helmut
Piotto, G
Cassisi, S
Bedin, L R
Recio-Blanco, Alejandra
Sarajedini, Ata
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IOP Publishing
Abstract
The horizontal-branch (HB) morphology of globular clusters (GCs) is mainly determined by metallicity. However, the fact that GCs with almost the same metallicity exhibit different HB morphologies demonstrates that at least one more parameter is needed to
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Astrophysical Journal, The
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Open Access
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