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Intrinsic iron spread and a new metallicity scale for globular clusters
We have collected spectra of about 2000 red giant branch (RGB) stars in 19 Galactic globular clusters (GC) using FLAMES@VLT (about 100 stars with GIRAFFE and about 10 with UVES, respectively, in eachExpand
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Na-O anticorrelation and HB. VII. The chemical composition of first and second-generation stars in 1
We present abundances of Fe, Na, and O for 1409 red giant stars in 15 galactic globular clusters (GCs), derived from the homogeneous analysis of high-resolution FLAMES/GIRAFFE spectra. Combining theExpand
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Properties of stellar generations in globular clusters and relations with global parameters
We revise the scenario of the formation of Galactic globular clusters (GCs) by adding the observed detailed chemical composition of their different stellar generations to the set of their globalExpand
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Abundances for a Large Sample of Red Giants in NGC 1851: Hints for a Merger of Two Clusters?
We present the abundance analysis of a sample of more than 120 red giants in the globular cluster (GC) NGC 1851, based on FLAMES spectra. We find a small but detectable metallicity spread. ThisExpand
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The GALAH Survey: Second Data Release
The Galactic Archaeology with HERMES (GALAH) survey is a large-scale stellar spectroscopic survey of theMilkyWay, designed to deliver complementary chemical information to a large number of starsExpand
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Terzan 8: a Sagittarius-flavoured globular cluster
Massive globular clusters (GCs) contain at least two generations of stars with slightly different ages and clearly distinct light element abundances. The Na-O anticorrelation is the best studiedExpand
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The Na-O anticorrelation in horizontal branch stars. II. NGC1851
We studied the Na-O anti-correlation from moderately high resolution spectra for 35 stars on the blue HB (BHB), one RR Lyrae, and 55 stars are on the red HB (RHB) of NGC1851. We also derivedExpand
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Helium in first and second-generation stars in globular clusters from spectroscopy of red giants
The stars in a globular cluster (GC) have always been considered coeval and of the same metallicity. Recently, this assumption has been challenged on the basis of spectroscopic and photometricExpand
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A Strömgren view of the multiple populations in globular clusters
We discuss a variety of photometric indices assembled from the uvby Stromgren system. Our aim is to examine the pros and cons of the various indices to find the most suitable one(s) for studying theExpand
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Sodium content as a predictor of the advanced evolution of globular cluster stars
The asymptotic giant branch (AGB) phase is the final stage of nuclear burning for low-mass stars. Although Milky Way globular clusters are now known to harbour (at least) two generations of stars,Expand
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