The chemical composition of red giants in 47 Tucanae I: Fundamental parameters and chemical abundance patterns

@article{Thygesen2014TheCC,
  title={The chemical composition of red giants in 47 Tucanae I: Fundamental parameters and chemical abundance patterns},
  author={Anders O. Thygesen and Luca Sbordone and Sergei M. Andrievsky and Sergey A. Korotin and David Yong and Simone Zaggia and Hans-G. Ludwig and Remo Collet and Martin Asplund and Francesca D’Antona and Jorge Mel'endez and A. D'ercole},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2014}
}
Context: The study of chemical abundance patterns in globular clusters is of key importance to constrain the different candidates for intra-cluster pollution of light elements. Aims: We aim at deriving accurate abundances for a large range of elements in the globular cluster 47 Tucanae (NGC 104) to add new constraints to the pollution scenarios for this particular cluster, expanding the range of previously derived element abundances. Methods: Using tailored 1D LTE atmospheric models together… Expand
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References

SHOWING 1-10 OF 118 REFERENCES
The chemical composition of red giants in 47 Tucanae. II. Magnesium isotopes and pollution scenarios
The phenomenon of multiple populations in globular clusters is still far from understood, with several proposed mechanisms to explain the observed behaviour. The study of elemental and isotopicExpand
A New Abundance Scale for the Globular Cluster 47 Tuc
We present chemical abundances for O, Na, Mg, Al, Si, Ca, Ti, and Fe in eight red giants and one turnoff star in the metal-rich globular cluster 47 Tuc, based on spectroscopy with the MagellanExpand
Globular Cluster Abundances from High-Resolution Integrated-Light Spectra. I. 47 Tuc
We describe the detailed chemical abundance analysis of a high-resolution ( -->R ~ 35,000), integrated-light (IL), spectrum of the core of the Galactic globular cluster 47 Tuc, obtained using the duExpand
Detailed Abundances for a Large Sample of Giant Stars in the Globular Cluster 47 Tucanae (NGC 104)
47 Tuc is an ideal target to study chemical evolution and globular cluster (GC) formation in massive more metal-rich GCs, as it is the closest massive GC. We present chemical abundances for O, Na,Expand
THE RISE OF THE AGB IN THE GALACTIC HALO: Mg ISOTOPIC RATIOS AND HIGH PRECISION ELEMENTAL ABUNDANCES IN M71 GIANTS*
High-resolution (R ≈ 100,000), high signal-to-noise spectra of M71 giants have been obtained with High Resolution Echelle Spectrometer at the Keck I telescope in order to measure their Mg isotopicExpand
Sulfur in the globular clusters 47 Tucanae and NGC 6752
Context. The light elements Li, O, Na, Al, and Mg are known to show star-to-star variations in the globular clusters 47 Tuc and NGC 6752. Such variations are interpreted as coming from processing inExpand
Heavy Element Abundances in Giant Stars of the Globular Clusters M4 and M5
We present a comprehensive abundance analysis of 27 heavy elements in bright giant stars of the globular clusters M4 and M5 based on high-resolution, high signal-to-noise ratio spectra obtained withExpand
Nitrogen Abundances in Giant Stars of the Globular Cluster NGC 6752
We present N abundances for 21 bright giants in the globular cluster NGC 6752 based on high-resolution UVES spectra of the 3360 A NH lines. We confirm that the Stromgren -->c1 index traces the NExpand
Heavy-element abundances in giant stars in 47 tucanae
This research forms part of an investigation into heavy-element abundances in asymptotic giant branch (AGB) stars in various stellar environments. Seven giant stars in the southern globular clusterExpand
Multiple stellar populations in the globular cluster NGC 1851
[Abridged] Detailed chemical tagging of individual stellar populations in the Galactic globular cluster (GC) NGC 1851 is presented. Abundances are derived from FLAMES spectra for the largest sampleExpand
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