Journal of Astrophysics and Astronomy

, Volume 8, Issue 2, pp 89–92 | Cite as

Recent work on CNO in dwarfs and subdwarfs

  • Robert P. Kraft


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.

Key words

abundances CNO—stars dwarfs and subdwarfs 


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Copyright information

© Indian Academy of Sciences 1987

Authors and Affiliations

  • Robert P. Kraft
    • 1
  1. 1.Lick Observatory, Board of Studies in Astronomy and AstrophysicsUniversity of CaliforniaSanta CruzUSA

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