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Solar Physics

, Volume 41, Issue 1, pp 53–65 | Cite as

The solar lithium abundance

II: Synthetic analysis of the solar lithium feature at λ6707.8 Å
  • Edith A Müller
  • Eric Peytremann
  • Ramiro de la Reza
Article

Abstract

The solar abundance of lithium and its isotopic abundance ratio were determined by comparing synthetic spectra with the high quality center-to-limb spectra of the solar lithium feature presented in Paper I by Brault and Müller (1974). The following possible effects on the abundance result were considered: deviations from LTE, atmospheric models, blends by molecular and atomic lines, hyperfine structure, large scale velocity fields. It was found that the photospheric lithium abundance is logɛLi=1.0±0.1. The greatest uncertainty is due to differences in the atmospheric models. The NLTE abundance result is 0.05 dex smaller than the LTE value. A mean depth of line formation was determined for the Li7i λ16707.776 Å line. The lithium isotopic abundance ratio was found to be Li6/Li7⩽0.01.

Keywords

Lithium Velocity Field Atmospheric Model Hyperfine Structure Scale Velocity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© D. Reidel Publishing Company 1975

Authors and Affiliations

  • Edith A Müller
    • 1
  • Eric Peytremann
    • 1
  • Ramiro de la Reza
    • 1
  1. 1.Observatoire de GenèveGenèveSwitzerland

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