Inhomogeneous Chemical Evolution and the Source of R-Process Elements

Details Inhomogeneous Chemical Evolution and the Source of R-Process Elements Inhomogeneous Chemical Evolution and the Source of R-Process Elements

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rpao.conf..129a&link_type=abstract

THE r-PROCESS The Astrophysical Origin of the Heavy Elements and Related Rare Isotope Accelerator Physics. Proceedings of the Fi

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

In this work, neutron star mergers, lower-mass (in the range 8 - 10 M&sun;) and higher-mass core-collapse supernovae (with masses ≥ 20 M&sun;) are assessed as dominant sources of r-process elements. I conclude that it is not possible at present to distinguish between the lower-mass and higher-mass supernovae scenarios within the framework of inhomogeneous chemical evolution. However, neutron-star mergers seem to be ruled out as the dominant r-process source, since their low rates of occurrence would lead to r-process enrichment that is not consistent with observations.

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