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- W3099647576 abstract "We present evidence for the contribution of high-mass globular clusters to the stellar halo of the Galaxy. Using SDSS-II/SEGUE spectra of over 1900 G- and K-type halo giants, we identify for the first time a subset of stars with CN bandstrengths significantly larger, and CH bandstrengths lower, than the majority of halo field stars, at fixed temperature and metallicity. Since CN bandstrength inhomogeneity and the usual attendant abundance variations are presently understood as a result of star formation in globular clusters, we interpret this subset of halo giants as a result of globular cluster dissolution into the Galactic halo. We find that 2.5% of our sample is CN-strong, and can infer based on recent models of globular cluster evolution that the fraction of halo field stars initially formed within globular clusters may be as large as 50%." @default.
- W3099647576 created "2020-11-23" @default.
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- W3099647576 date "2010-09-01" @default.
- W3099647576 modified "2023-10-02" @default.
- W3099647576 title "Light-element abundance variations in the Milky Way halo" @default.
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- W3099647576 doi "https://doi.org/10.1051/0004-6361/201014135" @default.
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