Astrophysics and Space Science

, Volume 20, Issue 1, pp 241–249 | Cite as

187Re, recyclingR-process elements through stars, and the age of the Galaxy

  • Raymond J. TalbotJr.
Article

Abstract

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.

Keywords

Numerical Model Decay Rate Laboratory Measurement Significant Uncertainty Galactic Evolution 

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Copyright information

© D. Reidel Publishing Company 1973

Authors and Affiliations

  • Raymond J. TalbotJr.
    • 2
    • 1
  1. 1.Institute of Theoretical AstronomyCambridgeEngland
  2. 2.Space Science Dept.Rice UniversityHoustonUSA

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