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Stellar origin of the182Hf cosmochronometer and the presolar history of solar system matter

Lugaro, Maria; Heger, Alexander; Osrin, Dean; Goriely, S; Zuber, Kai; Karakas, Amanda; Gibson, Brad; Doherty, Carolyn L; Lattanzio, John; Ott, Ulrich


Among the short-lived radioactive nuclei inferred to be present in the early solar system via meteoritic analyses, there are several heavier than iron whose stellar origin has been poorly understood. In particular, the abundances inferred for 182Hf (half-life = 8.9 million years) and 129I (half-life = 15.7 million years) are in disagreement with each other if both nuclei are produced by the rapid neutron-capture process. Here, we demonstrate that contrary to previous assumption, the slow...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Science
DOI: 10.1126/science.1253338


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