Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ennp.conf..265j&link_type=abstract
"EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS . Proceedings of the Carpathian Summer School of Physics 2005 . Held 13-24 June
Astronomy and Astrophysics
Astrophysics
Scientific paper
The first nucleosynthetic processes occurred about 200 seconds after the Big Bang, when the Universe was cool enough to allow the formation of light elements. Hydrogen, Helium-4, and traces of only a handful of isotopes (c.f., Deuterium, Helium-3, and Lithium-7), constitute the legacy of this primordial nucleosynthesis, that lasted only about 10 minutes. Synthesis of heavier species requires stellar furnaces and more or less violent events that provide a suitable way to contaminate this pristine primordial material, and therefore had to wait for the formation and evolution of the first stars. This took place about 180 Myr after the Big Bang, according to the recent analysis of the cosmic microwave background performed with the WMAP satellite. In this paper, we outline the nuclear processes associated with explosive stellar sites, namely supernovae, classical novae and x-ray bursts, and their interplay with the Galactic abundances.
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