Observation of interstellar lithium in the low-metallicity Small Magellanic Cloud

  title={Observation of interstellar lithium in the low-metallicity Small Magellanic Cloud},
  author={J. Howk and N. Lehner and B. Fields and G. Mathews},
The primordial abundances of light elements produced in the standard theory of Big Bang nucleosynthesis (BBN) depend only on the cosmic ratio of baryons to photons, a quantity inferred from observations of the microwave background. The predicted primordial 7Li abundance is four times that measured in the atmospheres of Galactic halo stars. This discrepancy could be caused by modification of surface lithium abundances during the stars’ lifetimes or by physics beyond the Standard Model that… Expand
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