Fluorine Abundance Variations as a Signature of Enhanced Extra Mixing in Red Giants of the Globular Cluster M4

Abstract

We show that enhanced extra mixing in low-mass red giants can result in a fluorine abundance that is correlated with abundance variations of other elements participating in H burning, such as C, N, O and Na. This finding is used to explain the fluorine abundance variations recently found in bright red giants of the globular cluster M4.

arXiv comment17 pages, 6 figures, submitted to ApJ

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Cited by in corpus (9)

• A model for the Globular Cluster extreme anomalies
• Fluorine and Sodium in C-rich low-metallicity stars
• Chemical Composition of Faint (I~21 mag) Microlensed Bulge Dwarf OGLE-2007-BLG-514S
• Formation of Multiple Populations in Globular Clusters: Another Possible Scenario
• The self-enrichment scenario in intermediate metallicity globular clusters
• Deep Mixing in Evolved Stars. II. Interpreting Li Abundances in RGB and AGB Stars
• AGB stars of the intermediate-age LMC cluster NGC 1846 II. Dredge up along the AGB
• The First Fluorine Abundance Determinations in Extragalactic AGB Carbon Stars
• 3He-Driven Mixing in Low-Mass Red Giants: Convective Instability in Radiative and Adiabatic Limits