Results 21 to 30 of about 995 (179)
Magnetic Mixing in Red Giant and Asymptotic Giant Branch Stars [PDF]
The Astrophysical Journal, 2008 Replaced to correct small error in published version: In \S 2.1, paragraphs 2 and 3 incorrectly refer to the poloidal field when qualitatively discussing magnetic diffusion in the shear zone. The correct physical interpretation is that the toroidal field diffuses through the shear zone consistent with the value of $\beta_\phi$
Nordhaus J. +4 more
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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
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CO observations of candidates for carbon-rich asymptotic giant branch and post-asymptotic giant branch stars [PDF]
The Astrophysical Journal, 1993 Circumstellar CO emission has been detected in a number of featureless or weak SiC emission, low color temperature IRAS sources. The CO detections confirm the suggestion that these are either extreme carbon stars, carbon-rich proto-planetary nebulae (PPNs), or carbon-rich planetary nebulae (PNs).
Volk, K, Kwok, S, Woodsworth, AW
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Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT We study a sample of single Galactic post-asymptotic giant branch (post-AGB) stars with known surface chemical composition. Gaia EDR3 and Gaia DR3 parallaxes have enabled accurate determinations of the luminosities of these objects, thus making it possible to characterize them in terms of their initial masses, chemical ...
D Kamath +5 more
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Properties of the Variation of the Infrared Emission of OH/IR Stars III. The M Band Light Curves [PDF]
Journal of Astronomy and Space Sciences, 2010 To study properties of the pulsation in the infrared emission for long period variables, we have collected and analyzed the infrared observational data at M band for 12 OH/IR stars.
Young-Joo Kwon, Kyung-Won Suh
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CHEMICAL ANALYSIS OF ASYMPTOTIC GIANT BRANCH STARS IN M62 [PDF]
The Astrophysical Journal, 2015 Accepted for publication by ApJ, 25 pages, 8 figures and 5 ...
LAPENNA, EMILIO +6 more
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THE INTERACTION OF ASYMPTOTIC GIANT BRANCH STARS WITH THE INTERSTELLAR MEDIUM [PDF]
The Astrophysical Journal, 2012 We study the hydrodynamical behavior of the gas expelled by moving Asymptotic Giant Branch Stars interacting with the ISM. Our models follow the wind modulations prescribed by stellar evolution calculations, and we cover a range of expected relative velocities (10 to 100 km/s), ISM densities (between 0.01 and 1 cm-3), and stellar progenitor masses (1 ...
Villaver Sobrino, Eva Gloria +2 more
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Isotopic Enrichment of Planetary Systems from Asymptotic Giant Branch Stars
The Astrophysical Journal Letters, 2023 Short-lived radioisotopes, in particular ^26 Al and ^60 Fe, are thought to contribute to the internal heating of the Earth, but are significantly more abundant in the solar system compared to the interstellar medium.
Richard J. Parker, Christina Schoettler
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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
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Asymptotic giant branch-stars in the GLIMPSE database
Astronomy & AstrophysicsAims. In the preceding paper (paper I) we showed that the GLIMPSE database contains millions of asymptotic giant branch (AGB) stars. Their nature follows from two properties: the objects have the same color after correction for interstellar extinction ...
Habing H. J., Habing M. A.
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