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Carbon and oxygen in metal-poor halo stars

Amarsi, Anish M; Nissen, Poul E; Asplund, Martin; Lind, K.; Barklem, P. S.


Carbon and oxygen are key tracers of the Galactic chemical evolution; in particular, a reported upturn in [C/O] towards decreasing [O/H] in metal-poor halo stars could be a signature of nucleosynthesis by massive Population III stars. We reanalyse carbon, oxygen, and iron abundances in 39 metal-poor turn-off stars. For the first time, we take into account 3D hydrodynamic effects together with departures from local thermodynamic equilibrium (LTE) when determining both the stellar parameters and...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201834480
Access Rights: Open Access


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