Results 51 to 60 of about 3,760 (219)
Magnetic Mixing in Red Giant and Asymptotic Giant Branch Stars [PDF]
, 2008 The available information on isotopic abundances in the atmospheres of low-mass Red Giant Branch (RGB) and Asymptotic Giant Branch (AGB) stars requires that episodes of extensive mixing occur below the convective envelope, reaching down to layers close ...
Nordhaus J. +4 more
core +2 more sources
Model Dust Envelopes for Asymptotic Giant Branch Stars. Carbon Stars. II. Carbon Stars [PDF]
Journal 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
ChemistryOpen, Volume 15, Issue 5, May 2026.The synthesis of ZnO nanoparticles (NPs) using pomegranate peel extract at ambient temperature represents a significant advancement in the development of sustainable dual‐functional materials. These NPs demonstrated high photocatalytic efficiency in the degradation of organic pollutants and exhibited significant supercapacitive energy storage ...
Roumaissa Djafarou +6 more
wiley +1 more source
Restoration Ecology, Volume 34, Issue 4, May 2026.Abstract Introduction Giant tortoises are critical for restoring lost ecological interactions on islands. Following their extinction in Seychelles centuries ago, key ecosystem processes like seed dispersal, browsing, and nutrient cycling were disrupted.
Iago Ferreiro‐Arias +3 more
wiley +1 more source
The Isaac Newton Telescope Monitoring project: Stellar population in the IC 10 dwarf irregular galaxy [PDF]
Iranian Journal of Astronomy and Astrophysics, 2019 We have conducted an optical monitoring survey of IC 10 dwarf irregular galaxy in the Local Group, using the Isaac Newton Telescope (INT) with the wide-field camera (WFC), to identify the Asymptotic Giant Branch stars (AGBs).
Mahtab Gholami, Mohammad Taghi Mirtorabi
doaj +1 more source
Trojan Horse Investigation for AGB Stellar Nucleosynthesis
Universe, 2022 Asymptotic Giant Branch (AGB) stars are among the most important astrophysical sites influencing the nucleosynthesis and the chemical abundances in the Universe. From a pure nuclear point of view, several processes take part during this peculiar stage of
Maria Letizia Sergi +17 more
doaj +1 more source
ON CARBON BURNING IN SUPER ASYMPTOTIC GIANT BRANCH STARS
The Astrophysical Journal, 2015 Accepted ApJ; 23 pages, 21 figures, 5 ...
R. Farmer, C. E. Fields, F. X. Timmes
openaire +5 more sources
First Principles Rovibronic Absorption Spectra of HF Molecule
Journal of Computational Chemistry, Volume 47, Issue 6, March 5, 2026.Hydrogen fluoride (HF) is astrophysically important, as it has been detected in sunspots, Venus, red giants, and the interstellar medium, serving as a probe of exoplanet atmospheres. This article presents an ab initio investigation of HF rovibronic spectroscopy, combining high‐level electronic‐structure data with nuclear‐motion solutions and refinement
Nariman Abu El Kher +5 more
wiley +1 more source
Evidence of Third Dredge-up in Post-AGB Stars in Galactic Globular Clusters
The Astrophysical JournalTo better understand the mixing and mass loss experienced by low-mass stars as they ascend the asymptotic giant branch (AGB), I have gathered from the literature the abundances of CNO and s -process elements in post-AGB stars in Galactic globular ...
William V. Dixon
doaj +1 more source
Pulsations of intermediate–mass stars on the asymptotic giant branch [PDF]
Astronomy Letters, 2017 26 pages, 10 figures, 2 tables, accepted to Astronomy ...
openaire +2 more sources