Results 11 to 20 of about 24,208 (239)

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   +3 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   +3 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
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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
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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

Stellar signatures of inhomogeneous big bang nucleosynthesis [PDF]

Physical Review D, 2020
We evaluate abundance anomalies generated in patches of the universe where the baryon-to-photon ratio was locally enhanced by possibly many orders of magnitude in the range $ = 10^{-10} - 10^{-1}$. Our study is motivated by the possible survival of rare dense regions in the early universe, the most extreme of which, above a critical threshold ...
Alexandre Arbey, Jérémy Auffinger, Joseph Silk   +2 more
openaire   +4 more sources

Atomic Data for Stellar Nucleosynthesis [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractStellar chemical composition analyses can only yield reliable abundances if the atomic transition parameters are accurately determined. During the last couple of decades a renewed emphasis on laboratory spectroscopy has produced large sets of useful atomic transition probabilities for species of interest to stellar spectroscopists.
Christopher Sneden, James E. Lawler, Elizabeth A. Den Hartog, Michael E. Wood   +3 more
openaire   +2 more sources

Challenges in nucleosynthesis of trans-iron elements [PDF]

AIP Advances, 2014
Nucleosynthesis beyond Fe poses additional challenges not encountered when studying astrophysical processes involving light nuclei. Astrophysical sites and conditions are not well known for some of the processes involved.
T. Rauscher
doaj   +4 more sources