Deuterium in the early solar system |
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Authors: | David C Black |
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Institution: | Theoretical Studies Branch, Ames Research Center, Moffett Field, CA. 94035, USA |
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Abstract: | An attempt is made to construct a self-consistent picture of the deuterium abundance in the early Solar System based on the assumption of chemical equilibrium in the solar nebula. A recent determination of the ratio for the atmosphere of Jupiter is consistent with a previous estimate of the ratio for the proto-Sun. The high (> 1.5 × 10?4) ratios determined from analyses of carbonaceous meteorites imply an equilibrium temperature < 270°K, in marked disagreement with the equilibrium temperature determined for the same material by oxygen isotope cosmothermometry. |
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