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astro-ph2000
Episodic lithium production by extra-mixing in red giants
P. A. Denissenkov, A. Weiss
The recent discovery of low-mass red giants with enhanced atmospherical Li abundance in galactic low-metallicity stellar clusters adds to the mysterious phenomenon of the Li-rich g…
astro-ph1999
The puzzling theoretical predictions for the luminosity of clumping He burning stars
V. Castellani, S. Degl'Innocenti, L. Girardi +3
This paper deals with theoretical predictions for He burning models in a range of masses covering the so-called Red Giant Branch phase transition. Taking as a guideline the observa…
astro-ph1997
The puzzling MgAl anticorrelation in globular-cluster red giants: primordial plus deep mixing scenario?
P. A. Denissenkov, G. S. Da Costa, J. E. Norris +1
Star-to-star abundance variations of C, N, O, Na and Al in globular-cluster red giants have been recently supplemented by the finding that [Mg/Fe] is depleted in stars with extreme…