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Paper: 3D and NLTE Effects on Spectroscopic Parameters of Late-Type Stars
Volume: 458, Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way
Page: 109
Authors: Lind, K.; Bergemann, M.; Collet, R.; Asplund, M.; Magic, Z.
Abstract: We investigate the impact on spectroscopic effective temperatures (Teff), surface gravities (log (g)), and metallicites ([Fe/H]) of metal-poor stars, when departures from LTE are taken into account and the atmospheric model is constructed from realistic 3D, hydrodynamical simulations. We demonstrate that traditional 1D, LTE analysis underestimates the values for all three parameters in the metal-poor subgiant HD140283.
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