Lithium Isotopic Abundances in the Early Galaxy

Details Lithium Isotopic Abundances in the Early Galaxy Lithium Isotopic Abundances in the Early Galaxy

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..374..119a&link_type=abstract

From Stars to Galaxies: Building the Pieces to Build Up the Universe. ASP Conference Series, Vol. 374, proceedings of the confer

Mathematics

Logic

Scientific paper

The lithium isotopes are potent probes of cosmic, galactic and stellar evolution. Herein I describe the challenging method used to derive Li isotopic abundances in metal-poor halo stars and their associated uncertainties. The results from our VLT-based program using extraordinarily high-quality spectra points to two cosmological Li problems: the observed ^7Li abundance is too low while the ^6Li abundance is too large compared with standard models for Big Bang nucleosynthesis and Galactic cosmic ray spallation.

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