Results 11 to 20 of about 9,884 (228)
Extremely Metal-Poor Asymptotic Giant Branch Stars [PDF]
Universe, 2022 Little is known about the first stars, but hints on this stellar population can be derived from the peculiar chemical composition of the most metal-poor objects in the Milky Way and in resolved stellar populations of nearby galaxies.
Mario Cirillo +2 more
doaj +4 more sources
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
openaire +2 more sources
Asymptotic Giant Branch Stars and presolar grains [PDF]
EPJ Web of Conferences, 2020 Starting from the recognition that radioactive isotopes were present alive in the Early Solar System, inducing composition anomalies from their decay, and through the discovery that other important anomalies affected also stable species, we shall discuss
Busso Maurizio +2 more
doaj +3 more sources
CHEMICAL ANALYSIS OF ASYMPTOTIC GIANT BRANCH STARS IN M62 [PDF]
The Astrophysical Journal, 2015 Accepted for publication by ApJ, 25 pages, 8 figures and 5 ...
LAPENNA, EMILIO +6 more
openaire +7 more sources
Asymptotic giant branch and super-asymptotic giant branch stars: modelling dust production at solar metallicity [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We present dust yields for asymptotic giant branch (AGB) and super--asymptotic giant branch (SAGB) stars of solar metallicity. Stars with initial mass $1.5~M_{\odot} \leq M_{\rm ini} \leq 3~M_{\odot}$ reach the carbon star stage during the AGB phase and produce mainly solid carbon and SiC.
Dell'Agli, F. +7 more
openaire +5 more sources
Introduction to Asymptotic Giant Branch Stars
Journal of Physics: Conference Series, 2016 A brief introduction on the main characteristics of the asymptotic giant branch stars (briefly: AGB) is presented. We describe a link to observations and outline basic features of theoretical modeling of these important evolutionary phases of stars. The most important aspects of the AGB stars is not only because they are the progenitors of white dwarfs,
M. Eid
openaire +2 more sources
ON CARBON BURNING IN SUPER ASYMPTOTIC GIANT BRANCH STARS [PDF]
The Astrophysical Journal, 2015 We explore the detailed and broad properties of carbon burning in Super Asymptotic Giant Branch (SAGB) stars with 2755 MESA stellar evolution models. The location of first carbon ignition, quenching location of the carbon burning flames and flashes, angular frequency of the carbon core, and carbon core mass are studied as a function of the ZAMS mass ...
R. Farmer, C. E. Fields, F. X. Timmes
openaire +6 more sources
Isotopic Enrichment of Planetary Systems from Asymptotic Giant Branch Stars
The Astrophysical Journal Letters, 2023 Short-lived radioisotopes, in particular ^26 Al and ^60 Fe, are thought to contribute to the internal heating of the Earth, but are significantly more abundant in the solar system compared to the interstellar medium.
Richard J. Parker, Christina Schoettler
doaj +4 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