The extra-mixing efficiency in very low metallicity RGB stars

2006/11/14 by Alejandra Recio-Blanco, A. Recio-Blanco, P. de Laverny +1 · 2 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Asymptotic giant branch #Globular cluster #Horizontal branch #Luminosity #Luminosity function #Metallicity #Red-giant branch #Stars #Stellar, planetary, and galactic studies #Superconducting and THz Device Technology #astro-ph

paper · pdf · doi:10.1051/0004-6361:20066552

arxiv created 2006/11/14 · openalex publication_date 2006/11/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Aims.After the first dredge-up, low-mass Red Giant Branch (RGB) stars experience an extra-mixing episode that strongly affects the chemical abundances on their surface. This mixing occurs at the bump in the luminosity function. In this Letter we describe the efficiency of the extra-mixing in RGB stars found in very metal-poor globular clusters (GC).

Citations

• The ubiquitous nature of the horizontal branch second U-jump
• JHKLM photometry - Standard systems, passbands, and intrinsic colors
• A Catalog of Parameters for Globular Clusters in the Milky Way
• The Two Micron All Sky Survey (2MASS)
• Abundances of C, N, O in slightly evolved stars in the globular clusters NGC 6397, NGC 6752 and 47 Tuc

Cited by

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