Results 21 to 30 of about 22,085 (227)

The Missing Lead: Developments in the Lead (Pb) Discrepancy in Intrinsically s-Process Enriched Single Post-AGB Stars

open access: yesUniverse, 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

Pulsation-triggered dust production by asymptotic giant branch stars [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
Eleven nearby (
I. McDonald   +3 more
semanticscholar   +1 more source

Heavy-element yields and abundances of asymptotic giant branch models with a Small Magellanic Cloud metallicity [PDF]

open access: yes, 2018
We present new theoretical stellar yields and surface abundances for asymptotic giant branch (AGB) models with a metallicity appropriate for stars in the Small Magellanic Cloud (SMC, $Z= 0.0028$, [Fe/H] $\approx -0.7$).
Amanda I Karakas   +5 more
semanticscholar   +1 more source

Magnetic and non-magnetic AGB mixing for s-processing [PDF]

open access: yesEPJ Web of Conferences, 2023
I outline a few features of recent models for the formation of the neutron source 13C(α,n)16O in low mass stars (1 ≲ M/M⊙ ≲ 3, LMS ) ascendingfor the second time the Red Giant Branch, generally called Asymptotic Giant Branch, or AGB stars. I also briefly
Busso Maurizio
doaj   +1 more source

STELLAR YIELDS FROM METAL-RICH ASYMPTOTIC GIANT BRANCH MODELS [PDF]

open access: yes, 2016
We present new theoretical stellar yields and surface abundances for three grids of metal-rich asymptotic giant branch (AGB) models. Post-processing nucleosynthesis results are presented for stellar models with initial masses between 1 M☉ and 7.5 M☉ for ...
A. Karakas, M. Lugaro
semanticscholar   +1 more source

Infrared Properties of Asymptotic Giant Branch Stars in Our Galaxy and the Magellanic Clouds [PDF]

open access: yesAstrophysical Journal, 2019
We investigate the infrared properties of asymptotic giant branch (AGB) stars in our Galaxy and the Magellanic Clouds using various infrared observational data and theoretical models.
K. Suh
semanticscholar   +1 more source

ASYMPTOTIC GIANT BRANCH VARIABLES

open access: yesOdessa Astronomical Publications, 2017
Asymptotic Giant Branch variable are the brightest and most distinctive individual stars to be found in the resolved, old and inter mediate age, stellar populations of galaxies in the Local Group and beyond.
P. A. Whitelock
doaj   +1 more source

The Search for Binaries in Post-Asymptotic Giant Branch Stars: Do Binary Companions Shape the Nebulae? [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
Binary companions are often invoked to explain the axial and point symmetry seen in the majority of planetary nebulae and proto-planetary nebulae (PPNs).
Bruce J. Hrivnak
doaj   +1 more source

Studying Asymptotic Giant Branch Stars in the JWST Era

open access: yesUniverse, 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   +1 more source

Rotation of the asymptotic giant branch star R Doradus [PDF]

open access: yes, 2018
High resolution observations of the extended atmospheres of asymptotic giant branch (AGB) stars can now directly confront the theories that describe stellar mass loss. Using Atacama Large Millimeter/submillimeter Array (ALMA) high angular resolution ($30\
W. Vlemmings   +9 more
semanticscholar   +1 more source

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