LTE or non-LTE, that is the question

@article{Hansen2012LTEON,
  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},
  year={2012}
}
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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© 2017 The Authors. Atmospheric parameters and chemical compositions for 10 stars with metallicities in the region of -2.2 < [Fe/H] < -0.6 were precisely determined using high-resolution, highExpand
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From exploratory studies and theoretical expectations it is known that simplifying approximations in spectroscopic analysis (local thermodynamic equilibrium (LTE), 1D) lead to systematic biases ofExpand
The formation of the Milky Way halo and its dwarf satellites; a NLTE-1D abundance analysis
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The abundance ratios of manganese to iron in late-type stars across a wide metallicity range place tight constraints on the astrophysical production sites of Fe-group elements. In this work, weExpand
Enrichment of the Galactic disc with neutron capture elements: Sr
The enrichment history of heavy neutron-capture elements in the Milky Way disc provides fundamental information about the chemical evolution of our Galaxy and about the stellar sources that madeExpand
The formation of the Milky Way halo and its dwarf satellites; a NLTE-1D abundance analysis. II. Early chemical enrichment
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