A double stellar generation in the globular cluster NGC 6656 (M 22)
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Marino, Anna
Milone, Antonino
Piotto, G
Villanova, S
Bedin, L R
Bellini, A
Renzini, Alvio
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Springer
Abstract
We present a chemical abundance analysis based on high resolution UVES spectra of seventeen bright giant stars in the Globular Cluster (GC) M 22. We obtained an average iron abundance of [Fe/H] =-1.76*± 0.02 (internal errors only) and an a enhancement of
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Astronomy and Astrophysics
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2037-12-31
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