LTE or non-LTE, that is the question

  title={LTE or non-LTE, that is the question},
  author={C. J. Hansen and Maria Bergemann and Gabriele Cescutti and P. François and Almudena Arcones and Amanda I. Karakas and Karin Lind and Cristina Chiappini},
  journal={arXiv: Solar and Stellar Astrophysics},
Strontium has proven itself to be one of the most important neutron-capture elements in the study of metal-poor stars. Thanks to the strong absorption lines of Sr, they can be detected even in the most metal-poor stars and also in low-resolution spectra. However, we still cannot explain the large star-to-star abundance scatter we derive for metal-poor stars. Here we contrast Galactic chemical evolution (GCE) with improved abundances for SrI+II including updated atomic data, to evaluate possible… Expand
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We investigate the statistical equilibrium of neutral and singly-ionized strontium in late-type stellar atmospheres. Particular attention is given to the completeness of the model atom, whichExpand