After hydrogen and helium, oxygen, carbon, and nitrogen—hereinafter, the CNO elements—
are the most abundant species in the universe. They are observed in all kinds of …

The internal properties of stars in the red-giant phase undergo significant changes on
relatively short timescales. Long near-uninterrupted high-precision photometric timeseries …

The chemical evolution of the Universe is governed by the chemical yields from stars, which
in turn are determined primarily by the initial stellar mass. Even stars as low as 0.9 M⊙ can …

We present new theoretical stellar yields and surface abundances for three grids of metal-
rich asymptotic giant branch (AGB) models. Post-processing nucleosynthesis results are …

By using updated stellar low-mass stars models, we systematically investigate the
nucleosynthesis processes occurring in asymptotic giant branch (AGB) stars. In this paper …

Context. The availability of asteroseismic constraints for a large sample of stars from the
missions CoRoT and Kepler paves the way for various statistical studies of the seismic …

Context. Numerous spectroscopic observations provide compelling evidence for non-
canonical processes that modify the surface abundances of low-and intermediate-mass …

We examine the physical basis for algorithms to replace mixing-length theory (MLT) in stellar
evolutionary computations. Our 321D procedure is based on numerical solutions of the …

The carbon-enhanced metal-poor (CEMP) stars constitute approximately one fifth of the
metal-poor ($[{\rm Fe}/{\rm H}]\la-2$) population but their origin is not well understood. The …

The C 12/C 13 ratio is a significant indicator of nucleosynthesis and mixing processes during
hydrogen burning in stars. Its value mainly depends on the relative rates of the C 12 (p, γ) N …