Results 31 to 40 of about 1,424,303 (245)
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
openaire +3 more sources
Quantifying Uncertainties on the Tip of the Red Giant Branch Method
The Astronomical Journal, 2023 We present an extensive grid of numerical simulations quantifying the uncertainties in measurements of the tip of the red giant branch (TRGB). These simulations incorporate a luminosity function composed of 2 mag of red giant branch (RGB) stars leading ...
Barry F. Madore +3 more
doaj +1 more source
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
openaire +3 more sources
Pulsation-triggered dust production by asymptotic giant branch stars [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Eleven nearby (
I. Mcdonald +3 more
semanticscholar +1 more source
CHEMICAL COMPOSITION OF ATMOSPHERES OF COOL GIANT STARS
Odessa Astronomical Publications, 2017 Results of determination of abundances of chemical elements in the atmospheres of 57 giant stars of the oxygen sequence of the Galactic disk axe given.
N. S. Komarov
doaj +1 more source
The Astrophysical Journal, 2023 In previous work, we identified a population of 38 cool and luminous variable stars in the Magellanic Clouds and examined 11 in detail in order to classify them as either Thorne–Żytkow objects (TŻOs; red supergiants with a neutron star cores) or super ...
Anna J. G. O‘Grady +11 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2021 Among presolar grains, oxide ones are made of oxygen, aluminum, and a small fraction of magnesium, produced by the 26Al decay. The largest part of presolar oxide grains belong to the so-called group 1 and 2, which have been suggested to form in Red Giant
S. Palmerini +11 more
doaj +1 more source
High mass-loss asymptotic giant branch stars detected by the Midcourse Space Experiment in the 'intermediate' and 'outer' Galactic bulge [PDF]
, 2007 We present a study of Midcourse Space Experiment (MSX) point sources in the Galactic bulge (|l| < 3°, 1° < |b| < 5°), observed in the A, C, D and E bands (8–21μm), with a total area ∼48 deg2 and more than 7000 detected sources in the MSXD band ...
Ojha, D., K. +6 more
core +1 more source
Do meteoritic silicon carbide grains originate from asymptotic giant branch stars of super-solar metallicity? [PDF]
, 2018 We compare literature data for the isotopic ratios of Zr, Sr, and Ba from analysis of single meteoritic stardust silicon carbide (SiC) grains to new predictions for the slow neutron-capture process (the s process) in metal-rich asymptotic giant branch ...
M. Lugaro +3 more
semanticscholar +1 more source
EVOLUTION, NUCLEOSYNTHESIS, AND YIELDS OF LOW-MASS ASYMPTOTIC GIANT BRANCH STARS AT DIFFERENT METALLICITIES [PDF]
, 2009 The envelope of thermally pulsing asymptotic giant branch (TP-AGB) stars undergoing periodic third dredge-up (TDU) episodes is enriched in both light and heavy elements, the ashes of a complex internal nucleosynthesis involving p, α, and n captures over ...
S. Cristallo +8 more
semanticscholar +1 more source