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Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S334(13), p. 337-338

DOI: 10.1017/s1743921317007189

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Abundance Analysis for Extremely Metal-Poor Stars from SDSS/SEGUE

Journal article published in 2017 by T. Matsuno ORCID, W. Aoki, T. C. Beers, Y. S. Lee, S. Honda
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractWe report the results of abundance analysis for high-resolution spectra of eight extremely metal-poor turn-off stars selected from SDSS/SEGUE. Based on differential analysis adopting stellar parameters from Balmer line profiles, we obtain the following results: i) Statistically significant scatter is found in [X/Fe] (X=Na, Mg, Cr, Ti, Sr and Ba), among which [Na/Fe] shows an apparent bimodal distribution, ii) Li abundances are ~0.3 dex lower in [Fe/H]<−3.5 than the Spite plateau value without significant scatter.

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