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.


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.


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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