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Multiple Stellar Populations in Asymptotic Giant Branch Stars of Galactic Globular Clusters [PDF]

open access: bronze, 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
openalex   +3 more sources

Synthesis of thorium and uranium in asymptotic giant branch stars [PDF]

open access: hybridAstronomy & 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
openalex   +3 more sources

Turbulent dynamo in asymptotic giant branch stars [PDF]

open access: bronze, 2002
Using recent results on the operation of turbulent dynamos, we show that a turbulent dynamo can amplify a large scale magnetic field in the envelopes of asymptotic giant branch (AGB) stars.
Noam Soker, Essam Zoabi
openalex   +5 more sources

A H I IMAGING SURVEY OF ASYMPTOTIC GIANT BRANCH STARS [PDF]

open access: bronze, 2013
We present an imaging study of a sample of eight asymptotic giant branch (AGB) stars in the HI 21-cm line. Using observations from the Very Large Array, we have unambiguously detected HI emission associated with the extended circumstellar envelopes of ...
Lynn D. Matthews   +7 more
openalex   +6 more sources

Thes‐Process in Rotating Asymptotic Giant Branch Stars [PDF]

open access: green, 2003
(abridged) We model the nucleosynthesis during the thermal pulse phase of a rotating, solar metallicity AGB star of 3M_sun. Rotationally induced mixing during the thermal pulses produces a layer (~2E-5M_sun) on top of the CO-core where large amounts of ...
Falk Herwig, N. Langer, Maria Lugaro
openalex   +3 more sources

Asymptotic giant branch and super-asymptotic giant branch stars: modelling dust production at solar metallicity [PDF]

open access: green, 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
openalex   +3 more sources

A Catalog of GALEX Ultraviolet Emission from Asymptotic Giant Branch Stars [PDF]

open access: bronze, 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
semanticscholar   +4 more sources

On Carbon Burning in Super Asymptotic Giant Branch Stars [PDF]

open access: yes, 2015
We explore the detailed and broad properties of carbon burning in Super Asymptotic Giant Branch (SAGB) stars with 2755 MESA stellar evolution models.
Farmer, R., Fields, C. E., Timmes, F. X.
core   +4 more sources

Model Dust Envelopes for Asymptotic Giant Branch Stars. Carbon Stars. II. Carbon Stars [PDF]

open access: greenJournal of Astronomy and Space Sciences, 1995
We have modeled the dust envelopes around carbon stars with close attention to the evolution of the structure of the dust shells. We use various dust density distributions to take account the effect of the superwind due to the helium shell flash by ...
Kyung-Won Suh, Hee-Joung Kwoun
doaj   +1 more source

Stellar Models and Yields of Asymptotic Giant Branch Stars [PDF]

open access: yesPublications Astronomical Society of Australia, 2007
We present stellar yields calculated from detailed models of low and intermediate-mass asymptotic giant branch (AGB) stars. We evolve models with a range of mass from 1 to 6Msun, and initial metallicities from solar to 1/200th of the solar metallicity ...
Amanda Karakas   +31 more
core   +3 more sources

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