Production of intermediate-mass and heavy nuclei

Thielemann, F. -K. and Fröhlich, C. and Hirschi, R. and Liebendoerfer, M. and Dillmann, I. and Mocelj, D. and Rauscher, T. and Martinez-Pinedo, G. and Langanke, K. and Farouqi, K. and Kratz, K. -L. and Pfeiffer, B. and Panov, I. and Nadyozhin, D. K. and Blinnikov, S. and Bravo, E. and Hix, W. R. and Hoflich, P. and Zinner, N. T.. (2007) Production of intermediate-mass and heavy nuclei. In: Progress in particle and nuclear physics, Vol. 59, No. 1. Oxford, pp. 74-93.

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Official URL: http://edoc.unibas.ch/dok/A5253882

Abstract

Nucleosynthesis is the science related to all astrophysical processes which are responsible for the abundances of the elements and their isotopes in the universe. The astrophysical sites are the big bang and stellar objects. The working of nucleosynthesis processes is presented in a survey of events which act as abundance sources. For intermediate-mass and heavy elements, these are stellar evolution, type la and core collapse supernovae as well as hypernovae. We discuss successes and failures of existing processes and possible solutions via new (hitherto unknown) processes. Finally an analysis of their role is given in the puzzle to explain the evolution of the elemental and isotopic compositions found in galaxies, and especially the mixture found in the solar system. Different timescales due to the progenitor mass dependence of the endpoints of stellar evolution (type II supemova. explosions - SNe II vs. planetary nebulae) or single vs. binary stellar systems (the latter being responsible for novae, type la supernovae - SNe la, or X-ray bursts) are the keys to understand galactic evolution. At very early times, the role of explosion energies of events, polluting pristine matter with a composition originating only from the big bang, might also play a role. We also speculate on the role of very massive stars not undergoing SN II explosions but rather causing hypernovae after the formation of a central black hole via core collapse.
Faculties and Departments: 05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann) Thielemann, Friedrich-Karl and Liebendörfer, Matthias and Fröhlich, Carla and Rauscher, Thomas Conference or Workshop Item, refereed Conference Paper Pergamon Press Publication type according to Uni Basel Research Database: Conference paper Document 14 Sep 2012 07:07 22 Mar 2012 13:56

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