Recent work on CNO in dwarfs and subdwarfs

Journal of Astrophysics and Astronomy - 1987
Robert P. Kraft1
1Lick Observatory, Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz, USA

Tóm tắt

The recent results on CNO in dwarfs and subdwarfs are discussed. The value of [O/Fe] ≃ 0.0 at solar abundances but gradually increases with decreasing [Fe/H]. The value of [C/Fe] is constant at ≃ 0.0 −2 +1 as [Fe/H] declines from + 0.5 to −2.0; for [Fe/H] < − 2.0, [C/Fe] increases somewhat reaching a mean value near + 0.2 or + 0.3 dex. All the investigations agree that N has a strong primary component.

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Journal of Astrophysics and Astronomy

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