Results 11 to 20 of about 1,424,303 (245)
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 +4 more sources
FLUORINE ABUNDANCES IN GALACTIC ASYMPTOTIC GIANT BRANCH STARS
The Astrophysical Journal, 2010 An analysis of the fluorine abundance in Galactic asymptotic giant branch (AGB) carbon stars (24 N-type, 5 SC-type, and 5 J-type) is presented. This study uses the state-of-the-art carbon-rich atmosphere models and improved atomic and molecular line lists in the 2.3 μm region.
Abia C. +12 more
core +6 more sources
Studying Asymptotic Giant Branch Stars in the JWST Era
Universe, 2020 We explore the potential offered by the incoming launch of the James Webb Space Telescope, to study the stars evolving through the asymptotic giant branch (AGB) phase. To this aim we compare data of AGB stars in the Large Magellanic Cloud, taken with the
Paolo Ventura +3 more
doaj +2 more sources
Mass Losing Asymptotic Giant Branch Stars And Supergiants
, 2016 This paper presents a summary of four invited and twelve contributed presentations on asymptotic giant branch stars and red supergiants, given over the course of two afternoon splinter sessions at the 19th Cool Stars Workshop. It highlights both recent observations and recent theory, with some emphasis on high spatial resolution, over a wide range of ...
Whitelock, Patricia A. +4 more
openaire +3 more sources
Modelling of molecular bands of oxygen-rich AGB stars
, 1998 ISO observations of infrared molecular bands of oxygen-rich AGB stars are compared with synthetic spectra generated using model ...
Plez, Bertrand +4 more
core +9 more sources
THE s-PROCESS IN ASYMPTOTIC GIANT BRANCH STARS OF LOW METALLICITY AND THE COMPOSITION OF CARBON-ENHANCED METAL-POOR STARS [PDF]
, 2011 We present models for the slow neutron-capture process (s-process) in asymptotic giant branch stars of metallicity [Fe/H] = −2.3 and masses 0.9–6 M☉. We encountered different regimes of neutron-capture nucleosynthesis listed here increasing in importance
M. Lugaro +3 more
semanticscholar +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 +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
Extremely Metal-Poor Asymptotic Giant Branch Stars
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 +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