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Irradiation of mixed ices as a laboratory cometary model

Published online by Cambridge University Press:  01 February 2008

Maria Colin-Garcia ,
Alicia Negrón-Mendoza ,
Sergio Ramos-Bernal  and
Elizabeth Chacon
Maria Colin-Garcia
Affiliation:
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, C. U. Mexico, D. F. Mexico 04510
Alicia Negrón-Mendoza
Affiliation:
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, C. U. Mexico, D. F. Mexico 04510
Sergio Ramos-Bernal
Affiliation:
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, C. U. Mexico, D. F. Mexico 04510
Elizabeth Chacon
Affiliation:
Facultad de Ciencias de la Tierra, Universidad Autónoma de Nuevo León email: negron@nucleares.unam.mx
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Abstract

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Icy bodies in space are being irradiated continuously by ionizing radiation. Therefore, the transformation of organic molecules trapped in extraterrestrial ices might have been possible. This work studied a bulk irradiation of a mixture of some constituents of cometary nuclei. The results show that the formation of different compounds, among them ammonia, carbon dioxide, amines, ureas, free amino acids, and oligomeric material, yields carboxylic acids, amino acids, and purines upon hydrolysis.

Keywords

Astrobiologyastrochemistrymolecular processeslaboratorycomets
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S251: Organic Matter in Space , February 2008 , pp. 447 - 448
Copyright
Copyright © International Astronomical Union 2008

References

Colín-García, M., Negrón-Mendoza, A., & Ramos-Bernal, S. 2008, Astrobiology, in pressGoogle Scholar
Draganič, I. G., Draganič, Z. D., & Vujosevič, S. 1984, Icarus, 60, 464CrossRefGoogle Scholar
Hudson, R. L. & Moore, M. H. 1999, Icarus, 140, 450Google Scholar