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arXiv · 1306.4836

The evolution of C and O abundances in stellar populations

Poul E. Nissen·William J. Schuster
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Abstract

Carbon and oxygen abundances in F and G main-sequence stars ranging in metallicity from [Fe/H] = -1.6 to +0.5 are determined from a non-LTE analysis of CI and OI atomic lines in high-resolution spectra. Both C and O are good tracers of stellar populations; distinct trends of [C/Fe] and [O/Fe] as a function of [Fe/H] are found for high- and low-alpha halo stars and for thick- and thin-disk stars. These trends and that of [C/O] provide new information on the nucleosynthesis sites of carbon and the time-scale for the chemical enrichment of the various Galactic components.

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Poul E. Nissen, William J. Schuster. 2013-06-20. The evolution of C and O abundances in stellar populations. https://doi.org/10.1017/s1743921313006212

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