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Effective temperature determinations of late-type stars based on 3D non-LTE Balmer line formation

Amarsi, Anish M; Nordlander, Thomas; Barklem, P. S.; Asplund, Martin; Collet, Remo; Lind, K.

Description

Hydrogen Balmer lines are commonly used as spectroscopic effective temperature diagnostics of late-type stars. However, reliable inferences require accurate model spectra, and the absolute accuracy of classical methods that are based on one-dimensional (1D) hydrostatic model atmospheres and local thermodynamic equilibrium (LTE) is still unclear. To investigate this, we carry out 3D non-LTE calculations for the Balmer lines, performed, for the first time, over an extensive grid of 3D...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
URI: http://hdl.handle.net/1885/195626
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201732546
Access Rights: Open Access

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