The Age of the Galaxy from Thorium Cosmochronometry

Details The Age of the Galaxy from Thorium Cosmochronometry The Age of the Galaxy from Thorium Cosmochronometry

2000-08-11

arxiv.org/abs/astro-ph/0008185v1

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures: To appear in the Proceedings of the Texas-Mexico Symposium

Scientific paper

The long-lived radioactive element thorium can potentially provide a simple and direct clock to determine the age of our Galaxy. Spectroscopic investigations of thorium in metal-poor stars have yielded some promising initial results. We discuss the major observational and theoretical limitations in thorium cosmochronometry, and point out the ways in which the implied Galactic ages from thorium abundances can be made more accurate.

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