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. P. Lagioia +10 more
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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
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Asymptotic giant branch and super-asymptotic giant branch stars: modelling dust production at solar metallicity [PDF]
, 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 ...
F. Dell’Agli +7 more
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A Catalog of GALEX Ultraviolet Emission from Asymptotic Giant Branch Stars [PDF]
, 2017 We have performed a comprehensive study of the UV emission detected from asymptotic giant branch (AGB) stars by the Galaxy Evolution Explorer (GALEX). Of the 468 AGB stars in our sample, 316 were observed by GALEX.
Rodolfo Montez +4 more
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Evolution and nucleosynthesis of helium-rich asymptotic giant branch models [PDF]
, 2015 There is now strong evidence that some stars have been born with He mass fractions as high as $Y \approx 0.40$ (e.g., in $\omega$ Centauri). However, the advanced evolution, chemical yields, and final fates of He-rich stars are largely unexplored.
Luke J. Shingles +5 more
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Distance Estimate Method for Asymptotic Giant Branch Stars Using Infrared Spectral Energy Distributions [PDF]
The Astrophysical JournalWe present a method to estimate distances to asymptotic giant branch (AGB) stars in the Galaxy, using spectral energy distributions (SEDs) in the near- and mid-infrared. By assuming that a given set of source properties (initial mass, stellar temperature,
Rajorshi Bhattacharya +10 more
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Presolar Grain Isotopic Ratios as Constraints to Nuclear and Stellar Parameters of Asymptotic Giant Branch Star Nucleosynthesis [PDF]
Astrophysical Journal, 2021 Recent models for evolved low-mass stars (with M ≲ 3 M ⊙), undergoing the asymptotic giant branch (AGB) phase assume that magnetic flux-tube buoyancy drives the formation of 13C reservoirs in He-rich layers.
S. Palmerini +10 more
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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
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Multi-line diagnostics of the axi-symmetric wind around the MS-type AGB star RS Cancri [PDF]
EPJ Web of Conferences, 2022 We present data recently obtained with NOEMA/PolyFiX on the MS-type Asymptotic Giant Branch (AGB) star RS Cnc, allowing to characterize in detail the structure of its wind.
Winters Jan Martin +7 more
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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
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