187Re, Recycling R-Process Elements Through Stars, and the Age of the Galaxy

Details 187Re, Recycling R-Process Elements Through Stars, and the Age of the Galaxy 187Re, Recycling R-Process Elements Through Stars, and the Age of the Galaxy

Jan 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973ap%26ss..20..241t&link_type=abstract

Astrophysics and Space Science, Volume 20, Issue 1, pp.241-249

Astronomy and Astrophysics

Astrophysics

11

Scientific paper

The enhanced β-decay rate of ionized187Re in stars has been studied within the context of a detailed numerical model of the production ofr-process elements and their recycling through stars during the course of galactic evolution. It is concluded that the enhanced decay rate does not significantly reduce the Re-Os chronometer age for the Galaxy. Consequently, the187Re β-decay half-life and the neutron cross-section ratio σ(186Os)/σ(187Os) remain as the significant uncertainties in this chronology. Unlike the uncertainties in other chronologies, both are amenable to laboratory measurements.

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