Results 21 to 30 of about 29,820 (298)
Evolution of Asymptotic Giant Branch Stars [PDF]
Annual Review of Astronomy and Astrophysics, 2005 ▪ Abstract The current status of modeling the evolution and nucleosynthesis of asymptotic giant branch (AGB) stars is reviewed. The principles of AGB evolution have been investigated in recent years leading to improved and refined models, for example with regard to hot-bottom burning or the third dredge-up.
F. Herwig
semanticscholar +2 more sources
Synthesis of thorium and uranium in asymptotic giant branch stars [PDF]
Astronomy & Astrophysics, 2022 The intermediate neutron capture process (i-process) operates at neutron densities between those of the slow and rapid neutron-capture processes. It can be triggered by the ingestion of protons in a convective helium-burning region.
A. Choplin, S. Goriely, L. Siess
semanticscholar +1 more source
Multiple Stellar Populations in Asymptotic Giant Branch Stars of Galactic Globular Clusters [PDF]
, 2021 Multiple stellar populations (MPs) are a distinct characteristic of globular clusters (GCs). Their general properties have been widely studied among main-sequence, red giant branch (RGB), and horizontal branch (HB) stars, but a common framework is still ...
E. Lagioia +10 more
semanticscholar +1 more source
Post-AGB Stars as Tracers of AGB Nucleosynthesis: An Update
Universe, 2022 The chemical evolution of galaxies is governed by the chemical yields from stars, and here we focus on the important contributions from asymptotic giant branch (AGB) stars. AGB nucleosynthesis is, however, still riddled with complexities.
Devika Kamath, Hans Van Winckel
doaj +1 more source
Universe, 2021 Lead (Pb) is predicted to have large over-abundances with respect to other s-process elements in Asymptotic Giant Branch (AGB) stars, especially of low metallicities.
Devika Kamath, Hans Van Winckel
doaj +1 more source
Evolution of asymptotic giant branch stars. II. Optical to far-infrared isochrones with improved TP- [PDF]
, 2007 We present a large set of theoretical isochrones, whose distinctive features mostly reside on the greatly-improved treatment of the thermally-pulsing asymptotic giant branch (TP-AGB) phase.
P. Marigo +16 more
semanticscholar +1 more source
Rubidium-Rich Asymptotic Giant Branch Stars [PDF]
Science, 2006 A long-debated issue concerning the nucleosynthesis of neutron-rich elements in asymptotic giant branch (AGB) stars is the identification of the neutron source. We report intermediate-mass (4 to 8 solar masses) AGB stars in our Galaxy that are rubidium-rich as a result of overproduction of the long-lived radioactive isotope 87
García-Hernández, D. A. +5 more
openaire +3 more sources
Neutron Capture in Low-Mass Asymptotic Giant Branch Stars: Cross Sections and Abundance Signatures [PDF]
, 1999 Recently improved information on the stellar (n, γ) cross sections of neutron magic nuclei at N = 82, and in particular of 142Nd, turn out to represent a sensitive test for models of s-process nucleosynthesis.
C. Arlandini +6 more
semanticscholar +1 more source
The Importance of the 13C(α,n)16O Reaction in Asymptotic Giant Branch Stars [PDF]
Astrophysical Journal, 2018 Low-mass asymptotic giant branch stars are among the most important polluters of the interstellar medium. In their interiors, the main component (A ≳ 90) of the slow neutron capture process (the s-process) is synthesized, the most important neutron ...
S. Cristallo +11 more
semanticscholar +1 more source