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Spectral diagnostics of late-type stars: Non-LTE and <3D> approach

Date

2012

Authors

Bergemann, Maria
Lind, Karin
Collet, Remo
Asplund, Martin
Magic, Zazralt

Journal Title

Journal ISSN

Volume Title

Publisher

EPJ Web of Conferences

Abstract

We determine effective temperature, metallicity, and microturbulence for a number of well-studied late-type stars. We use the new NLTE atomic model of Fe, and discuss the results for the MARCS models, as well as for the spatial and temporal averages of full 3D hydrodynamical simulations of stellar convection. It is shown that, contrary to the mean 3D models, certain limitations shall be imposed on the line formation and spectrum synthesis calculations with classical hydrostatic 1D models to obtain physically-realistic results.

Description

Keywords

Citation

Source

EPJ Web of Conferences

Type

Conference paper

Book Title

Entity type

Access Statement

License Rights

DOI

10.1051/epjconf/20121905013

Restricted until

2037-12-31