Results 101 to 110 of about 1,537 (221)
Properties of Carbon-rich Asymptotic Giant Branch Stars in the LMC and the Milky Way
The Astrophysical JournalWe present a comparative study of carbon-rich asymptotic giant branch (CAGB) stars in the Large Magellanic Cloud (LMC; 7347 stars) and the Milky Way (7163 stars) using infrared color–magnitude diagrams, spectral energy distributions (SEDs), two-color ...
Kyung-Won Suh
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GalaxiesThe red and yellow hypergiants are a rare and important phase in the evolution of the most massive stars that can reach the cool part of the HR Diagram.
Terry Jones
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Systematic Search for Water Fountain Candidates Using the Databases of Circumstellar Maser Sources
The Astrophysical Journal Supplement SeriesWater fountains (WFs) are thought to be objects in the morphological evolution of the circumstellar envelopes of low- and intermediate-mass evolved stars, transitioning from spherically symmetric to asymmetric shapes.
Haichen Fan +8 more
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Al-26 and circumstellar envelopes
The Astrophysical Journal, 1995 The effects of the radioactive decay of Al-26 on the circumstellar envelopes of asymptotic giant branch stars are analyzed. The gamma-rays emitted by the product nucleus Mg-26 escape most envelopes, but the beta-decay positrons are stopped and can ionize and heat the gas.
openaire +1 more source
PAH formation in carbon-rich circumstellar envelopes
, 1989 While there is growing observational evidence that some fraction of interstellar carbon is in polycyclic aromatic hydrocarbons (PAH's), the mechanisms by which these molecules might be formed have not been extensively studied. A detailed investigation of
Feigelson, Eric D., Frenklach, Michael
core
The Astrophysical Journal LettersWe present the first 3D radiation hydrodynamics simulations of partially stripped ( ${M}_{{\rm{core}}}\sim 10{M}_{\odot }$ , M _env ∼ 0.1–1 M _⊙ ) yellow supergiant ( L ∼ 10 ^5 L _⊙ , T _eff ≈ 5000–8000 K) envelopes, constructed with Athena++ .
Jared A. Goldberg +3 more
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Molecules and Chemistry in Red Supergiants
GalaxiesThe envelopes of Red Supergiants (RSGs) have a unique chemical environment not seen in other types of stars. They foster an oxygen-rich synthesis but are tempered by sporadic and chaotic mass loss, which distorts the envelope and creates complex outflow ...
Lucy M. Ziurys, Anita M. S. Richards
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87th Annual Meeting of the Meteoritical Society 2025: Abstracts
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley +1 more source
The ultraviolet extinction in M-supergiant circumstellar envelopes
, 1986 Using International Ultraviolet (IUS) archival low-dispersion spectra, ultraviolet spectral extinctions were derived for the circumstellar envelopes of two M supergiants: HD 60414 and HD 213310.
Buss, R. H., Jr., Snow, T. P., Jr.
core
Hα Emission among Evolved FGKM Stars: A Compendium from the Literature
The Astronomical JournalEmission in the wings of the H α line among late-type giant stars occurs as a consequence of conditions in their chromospheres. Data from the literature have been used to document the incidence of H α emission among Population I giant stars as a function
Graeme H. Smith
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