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Spectroscopy with Three-Dimensional Model Atmospheres of Late-Type Stars

Published online by Cambridge University Press:  27 October 2016

Remo Collet
Remo Collet*
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University, Cotter Rd, Weston Creek ACT 2611, Australia email: remo.collet@anu.edu.au
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Abstract

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In this contribution, I present the results of a differential analysis of CH spectral lines for the determination of carbon abundances with three- and one-dimensional model atmospheres of late-type stars at various metallicities. 3D-1D abundance corrections are found to be significant particularly at low metallicities and for turn-off stars. The dependence of 3D-1D carbon abundance corrections on the stellar C/O ratio is also discussed.

Keywords

stars: abundancesstars: late-typestars: atmosphereshydrodynamicsconvectionradiative transferline: formationstars: carbon
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 151 - 153
Copyright
Copyright © International Astronomical Union 2016 

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