Abstract
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 +1−2 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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Kraft, R.P. Recent work on CNO in dwarfs and subdwarfs. J Astrophys Astron 8, 89–92 (1987). https://doi.org/10.1007/BF02714306
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DOI: https://doi.org/10.1007/BF02714306