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arXiv · 0708.3906

Magnesium Isotopes in Halo Stars

Jorge Melendez·Judith G. Cohen
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Abstract

We have determined Mg isotope ratios in halo field dwarfs and giants in the globular cluster M71 based on high S/N high spectral resolution (R = 10$^5$) Keck HIRES spectra. Unlike previous claims of an important contribution from intermediate-mass AGB stars to the Galactic halo, we find that our $^{26}$Mg/$^{24}$Mg ratios can be explained by massive stars.

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Jorge Melendez, Judith G. Cohen. 2007-08-29. Magnesium Isotopes in Halo Stars. https://doi.org/10.1063/1.2905536

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