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The Chemical Evolution of Magnesium Isotopic Abundances in the Solar Neighbourhood

Fenner, Y; Gibson, Bradley K; Lee, H-C; Karakas, Amanda; Lattanzio, John; Chieffi, A; Limongi, M.; Yong, D


The abundance of the neutron-rich magnesium isotopes observed in metal-poor stars is explained quantitatively with a chemical evolution model of the local Galaxy that considers - for the first time - the metallicity-dependent contribution from intermediate mass stars. Previous models that simulate the variation of Mg isotopic ratios with metallicity in the solar neighbourhood have attributed the production of 25Mg and 26Mg exclusively to hydrostatic burning in massive stars. These models match...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Publications of the Astronomical Society of Australia
DOI: 10.1071/AS03042


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