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Isotopic Fractionation in Interstellar Carbon-bearing Molecules Unrelated to Carbon Monoxide

Published online by Cambridge University Press:  14 August 2015

V. Vanýsek
V. Vanýsek*
Affiliation:
Department of Astronomy and Astrophysics, Charles University, Prague, Czechoslovakia

Abstract

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The isotopic abundance ratio 12C/13C in some carbon-bearing molecules is discussed in the context of chemical fractionation via ion-molecule and exchange reactions in dense interstellar clouds. These processes can lead to enhancement of 12C in molecules not related to carbon monoxide. The effect is transient and takes place preferentially outside the cores of the interstellar clouds. However, some enhancement of 12C should remain in gases frozen onto dust grains and may be reflected in larger objects such as cometary nuclei.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 423 - 426
Copyright
Copyright © Reidel 1980 

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