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Limits on the C^(12)/C^(13)Ratio in Metal-Deficient Stars

Cohen, J. G. and Grasdalen, G. L. (1968) Limits on the C^(12)/C^(13)Ratio in Metal-Deficient Stars. Astrophysical Journal, 151 . L41-L43. ISSN 0004-637X. doi:10.1086/180136.

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Lower limits for the ratio C^(12)/C^(13) have been determined for eight metal-deficient stars. These limits are inconsistent with the predictions of nearly all of the universal models considered by Wagoner, Fowler, and Hoyle (1967) unless at least one generation of massive, rapidly evolving stars existed before the formation of any of the program stars.

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Cohen, J. G.0000-0002-8039-4673
Additional Information:© American Astronomical Society • Provided by the NASA Astrophysics Data System. Received October 25, 1967. This research has been supported in part by grant NGR 22-024-001 from the National Aeronautics and Space Administration and grant GP 7030 of the National Science Foundation. We should like to thank Prof. W. A. Fowler and Dr. R. Wagoner for helpful discussions. We thank Prof. Jesse L. Greenstein for the plate material. We are very grateful to Dr. Stephen E. Strom, who suggested the problem and provided funds and encouragement.
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NASANGR 22-024-001
NSFGP 7030
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ID Code:95849
Deposited By: George Porter
Deposited On:29 May 2019 21:45
Last Modified:16 Nov 2021 17:16

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