Results 1 to 10 of about 23,934 (219)

Neutron captures in stellar nucleosynthesis [PDF]

EPJ Web of Conferences, 2023
Apart from cosmological hydrogen and helium, chemical elements in the Universe are produced in stars, during both quiescent and explosive phases. The Sun chemical distribution witnesses the pollution from already extinct stellar generations at different ...
Cristallo Sergio
doaj   +2 more sources

Planetary nebulae, tracers of stellar nucleosynthesis [PDF]

EAS Publications Series, 2006
We review the information that planetary nebulae and their immediate progenitors, the post-AGB objects, can provide to probe the nucleosynthesis and mixing in low and intermediate mass stars.
Balser, Balser, Becker, Burbidge, Charbonnel, Charbonnel, Charbonnel, Dinerstein, Forestini, G. Stasińska, Gustafsson, Górny, Górny, Hamann, Henry, Henry, Howard, Iben, Jacoby, Kingsburgh, Leisy, Leisy, Liu, Liu, Livio, Marigo, Marigo, Martín-Hernández, Moe, Napiwotzki, Palla, Palla, Peimbert, Peimbert, Perinotto, Peña, Prantzos, Péquignot, Rauch, Richer, Richer, Rubin, Sharpee, Soker, Stasińska, Stasińska, Sterling, Sterling, Sterling, Szczerba, Todt, Torres-Peinbert, Tovmassian, van den Hoek, Weidemann, Werner, Werner, Werner, Zhang, Zoccali   +59 more
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Neutron-Driven Nucleosynthesis in Stellar Plasma

Frontiers in Physics, 2022
A large uncertainty for the slow neutron capture nucleosynthesis (s-process) models is caused by the amount of neutrons available to the process itself.
R. Spartà, M. La Cognata, G. L. Guardo, G. L. Guardo, S. Palmerini, S. Palmerini, M. L. Sergi, M. L. Sergi, G. D’Agata, G. D’Agata, L. Lamia, L. Lamia, L. Lamia, D. Lattuada, D. Lattuada, A. A. Oliva, A. A. Oliva, R. G. Pizzone, G. G. Rapisarda, G. G. Rapisarda, S. Romano, S. Romano, S. Romano, A. Tumino, A. Tumino   +24 more
doaj   +3 more sources

Trojan Horse Investigation for AGB Stellar Nucleosynthesis [PDF]

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, Giuseppe D’Agata, Giovanni Luca Guardo, Giuseppe Gabriele Rapisarda, Vaclav Burjan, Silvio Cherubini, Marisa Gulino, Iolanda Indelicato, Marco La Cognata, Livio Lamia, Dario Lattuada, Jaromir Mrázek, Alessandro Alberto Oliva, Rosario Gianluca Pizzone, Stefano Romano, Roberta Spartá, Oscar Trippella, Aurora Tumino   +17 more
doaj   +5 more sources

Electron Capture Cross Sections for Stellar Nucleosynthesis [PDF]

Advances 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   +3 more sources

Chemical evolution models with a new stellar nucleosynthesis [PDF]

Monthly Notices of the Royal Astronomical Society, 1994
Numerical models for the chemical evolution of the Galaxy have been computed with the new stellar yields published by Maeder (1992). These metallicity dependent yields represent an important improvement in the chemical evolution of galaxies but there are
Giovagnoli, A., Tosi, M.
core   +6 more sources

Fundamentals of stellar evolution and nucleosynthesis [PDF]

EPJ 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

Phosphorus-rich stars with unusual abundances are challenging theoretical predictions [PDF]

Nature Communications, 2020
Current models of Galactic chemical evolution under predict the phosphorus we observe in our Solar System. Here, the authors show the discovery of 15 phosphorus-rich stars with a peculiar abundance pattern that challenges the present stellar ...
Thomas Masseron, D. A. García-Hernández, Raúl Santoveña, Arturo Manchado, Olga Zamora, Minia Manteiga, Carlos Dafonte   +6 more
doaj   +2 more sources

EXPLOSIVE NUCLEOSYNTHESIS AT STRONG STELLAR MAGNETIZATION

Odessa 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   +2 more sources

Turbulence and nuclear reactions in 3D hydrodynamics simulations of massive stars [PDF]

EPJ Web of Conferences, 2023
Our knowledge of massive star evolution and nucleosynthesis is limited by uncertainties related to multi-dimensional processes taking place in stellar interiors.
Rizzuti Federico, Hirschi Raphael, Georgy Cyril, Arnett David, Meakin Casey, Murphy Alexander   +5 more
doaj   +1 more source