Computer Science
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001stin...0225069w&link_type=abstract
Technical Report, DE2001-786200; LA-UR-01-4992
Computer Science
Cosmochemistry, Models, Galactic Evolution, Star Formation, Stellar Evolution, Stellar Interiors, Abundance, Isotopes, Galaxies, Solar System, Interstellar Matter, Nuclear Fusion, Solar Wind
Scientific paper
Understanding the evolution of the universe from Big Bang to its present state requires an understanding of the evolution of the abundances of the elements and isotopes in galaxies, stars, the interstellar medium, the Sun and the heliosphere planets and meteorites. Processes that change the state of the universe include Big Bang nucleosynthesis, star formation and stellar nucleosynthesis, galactic chemical evolution, propagation of cosmic rays, spallation, ionization and particle transport of interstellar material, formation of the solar system, solar wind emission and its fractionation (FIP/FIT effect), mixing processes in stellar interiors, condensation of material and subsequent geochemical fractionation. Here, we attempt to compile some major issues in cosmochemistry that can be addressed with a better knowledge of the respective element or isotope abundances. This includes the planetary or cometary samples will result in an improved database of elemental and isotopic abundances. This includes the primordial abundances of D, 3He, 4He, and 7Li, abundances of the heavier elements in stars and galaxies, the composition of the interstellar medium, solar wind and comets as well as the (highly) volatile elements in the solar systems such as helium, nitrogen, oxygen or xenon.
Busemann Henner
Wiens Roger
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