Lithium isotopic abundances in very metal-poor halo stars

Details Lithium isotopic abundances in very metal-poor halo stars Lithium isotopic abundances in very metal-poor halo stars

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005noao.prop..186a&link_type=abstract

NOAO Proposal ID #2005B-0186

Physics

Scientific paper

In our VLT/UVES survey of 6Li and 7Li isotopic abundances in Galactic halo stars, we have boosted the number of positive 6Li detections in such stars from the previous single case to at least ten. No doubt the most exciting result stemming from our program is a detection of 6Li in LP815-43, one of the most metal-poor stars in our sample ([Fe/H]=-2.7). If high 6Li abundances at low [Fe/H] is a general feature, it would have important ramifications for light element production in the early Universe, Li depletion in metal-poor stars, Big Bang nucleosynthesis and possibly even non-standard particle physics. We here request Keck/HIRES time to observe a sufficiently large sample of very metal-poor stars to test whether such a 6Li plateau indeed exists.

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