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

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        904945.pdf (PDF, 186Kb)
        Author
        Dauphas, N.
        Rauscher, T.
        Marty, B.
        Reisberg, L.
        Attention
        2299/11011
        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.
        Publication date
        2003-05-19
        Published in
        Nuclear Physics A
        Published version
        https://doi.org/10.1016/S0375-9474(03)00934-5
        Other links
        http://hdl.handle.net/2299/11011
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