Hostname: page-component-669899f699-tzmfd Total loading time: 0 Render date: 2025-04-29T22:34:44.497Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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 

References

Freeman, C.G., Harland, P.W. and Mc Ewan, M.J.: 1979, Mon. Not. RAS 187, 441.Google Scholar
Gerola, H. and Glassgold, A.E.: 1978, Astrophys. J. Suppl. 37.CrossRefGoogle Scholar
Langer, W.D.: 1976, Astrophys. J. 210, 328.Google Scholar
Liszt, H.S.: 1978, Astrophys. J. 222, 484.Google Scholar
Vanysek, V. and Rahe, J.: 1978, The Moon and the Planets 18, 441.Google Scholar
Watson, W.D., Anicich, V.G. and Huntress, W.T.: 1976, Astrophys. J. (Letters) 205, L165.CrossRefGoogle Scholar
Watson, W.D.: 1977 in CNO Isotopes in Astrophysics, ed. Audouze, J. (Dordrecht, Reidel) p. 105.Google Scholar