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Tuning the Clock: Uranium and Thorium Chronometers Applied to CS 31082-001

R. Toenjes·H. Schatz·K. -L. Kratz·B. Pfeiffer·T. C. Beers·J. Cowan·V. Hill
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Abstract

We obtain age estimates for the progenitor(s) of the extremely metal-poor ([Fe/H = -2.9) halo star CS 31082-001, based on the recently reported first observation of a Uranium abundance in this (or any other) star. Age estimates are derived by application of the classical r-process model with updated nuclear physics inputs. The [U/Th] ratio yields an age of 13+-4 Gyr or 8+-4 Gyr, based on the use of the ETFSI-Q or the new HFBCS-1 nuclear mass models, respectively. Implications for Thorium chronometers are discussed.

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R. Toenjes, H. Schatz, K. -L. Kratz, B. Pfeiffer, T. C. Beers, J. Cowan, V. Hill. 2001-04-20. Tuning the Clock: Uranium and Thorium Chronometers Applied to CS 31082-001. https://doi.org/10.1086/342939

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