Results 11 to 20 of about 161,423 (202)

Positron accumulations from stellar nucleosynthesis

open access: yesFrontiers in Astronomy and Space Sciences
The predominant fusion chain in stellar nucleosynthesis produces positron and neutrino byproducts in equal amounts. An extremely high neutrino flux can be directly measured, but the unobservable, yet equally high flux of positrons is traditionally ...
Joseph Caleb Philipps   +4 more
doaj   +3 more sources

Electron Capture Cross Sections for Stellar Nucleosynthesis [PDF]

open access: yesAdvances in High Energy Physics, 2015
In the first stage of this work, we perform detailed calculations for the cross sections of the electron capture on nuclei under laboratory conditions.
P. G. Giannaka, T. S. Kosmas
doaj   +5 more sources

Nucleosynthesis and Stellar Evolution

open access: yesAstrophysics and Space Science, 2002
Two of the basic building blocks of galaxies are stars and the interstellar medium. The evolution of the abundance composition in the latter and especially the enrichment of heavy elements as a function of space and time reflects in turn the history of star formation and the lifetimes of the diverse contributing stellar objects.
Thielemann, F. K.   +8 more
core   +9 more sources

Planetary Nebulae, Tracers of Stellar Nucleosynthesis [PDF]

open access: yesEAS Publications Series, 2008
13 pages, to appear in "StellarNucleosynthesis: 50yearsafterB2FH", eds. C. Charbonnel and J.-P.
Stasinska, Grazyna, G. Stasińska
openaire   +4 more sources

Fundamentals of stellar evolution and nucleosynthesis [PDF]

open access: yesEPJ Web of Conferences
The theory of stellar structure and evolution plays a pivotal role in modern astrophysics. Stellar evolution calculations are used to determine the ages and, to a lesser extent, distances of stars, which are critical to our knowledge of the history and ...
Vescovi Diego
doaj   +2 more sources

Nucleosynthesis and future stellar abundance determinations

open access: yesEAS Publications Series, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
B. Gustafsson
openaire   +2 more sources

The NuGrid AGB Evolution and Nucleosynthesis Data Set [PDF]

open access: yesUniverse, 2022
Asymptotic Giant Branch (AGB) stars play a key role in the chemical evolution of galaxies. These stars are the fundamental stellar site for the production of light elements such as C, N and F, and half of the elements heavier than Fe via the slow neutron
Umberto Battino   +4 more
doaj   +2 more sources

θ-dependence of light nuclei and nucleosynthesis

open access: yesPhysical Review Research, 2020
We investigate the impact of the QCD vacuum at nonzero θ on the properties of light nuclei, Big Bang nucleosynthesis, and stellar nucleosynthesis. Our analysis starts with a calculation of the θ-dependence of the neutron-proton mass difference and ...
Dean Lee   +4 more
doaj   +2 more sources

Stellar Evolution, SN Explosion, and Nucleosynthesis

open access: yes, 2022
42 pages, 17 figures; Invited chapter for Handbook of X-ray and Gamma-ray Astrophysics (Eds. C. Bambi and A. Santangelo, Springer Singapore, expected in 2022).
Maeda, Keiichi
openaire   +3 more sources

EXPLOSIVE NUCLEOSYNTHESIS AT STRONG STELLAR MAGNETIZATION

open access: yesOdessa Astronomical Publications, 2014
Synthesis of iron group nuclides is considered for the ultra-magnetized astrophysical plasma in supernovae. Magnetic modification of nuclear structure is shown to shift maximum of nucleosynthesis products towards smaller mass numbers enhancing titanium ...
V. N. Kondratyev, Yu. V. Korovina
doaj   +3 more sources

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