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Short-lived p-nuclides in the early solar system and implications on the nucleosynthetic role of X-ray binaries

Dauphas, N. and Rauscher, T. and Marty, B. and Reisberg, L.. (2003) Short-lived p-nuclides in the early solar system and implications on the nucleosynthetic role of X-ray binaries. Nuclear physics. A, Nuclear and hadronic physics, Vol. 719 , S. C287-C295.

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Official URL: http://edoc.unibas.ch/dok/A5253980

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Abstract

The data available for short-lived p-nuclides are used in an open nonlinear model of the chemical evolution of the Galaxy in order to discuss the origin of extinct radionuclides, the stellar sources of p-nuclides, and the chronology of solar system formation. It is concluded that the observed abundances of Tc-97, Te-98, Nb-92, and Sm-146 in the early solar system are consistent with nucleosynthesis in type II supernovae during continuous chemical evolution of the Galaxy and a subsequent short isolation of the presolar molecular cloud from fresh nucleosynthetic inputs. However, further work on supernova models is needed before p-radionuclides will comprise reliable cosmochronometers. Despite these limitations, we argue that niobium-92 can be used to test whether the rp-process contributed to the synthesis of light p-nuclides in the Mo-Ru region.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Rauscher, Thomas
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:North Holland
ISSN:0375-9474
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:46

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