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Organic residues from ultraviolet irradiation of interstellar ice analogs

Published online by Cambridge University Press:  13 February 2013

P. Modica
Affiliation:
Université Paris-Sud 11, Astrochimie et Origines, Institut d’Astrophysique Spatiale, UMR 8617, 91405 Orsay, France
P. de Marcellus
Affiliation:
Université Paris-Sud 11, Astrochimie et Origines, Institut d’Astrophysique Spatiale, UMR 8617, 91405 Orsay, France
D. Baklouti
Affiliation:
Université Paris-Sud 11, Astrochimie et Origines, Institut d’Astrophysique Spatiale, UMR 8617, 91405 Orsay, France
R. Brunetto
Affiliation:
Université Paris-Sud 11, Astrochimie et Origines, Institut d’Astrophysique Spatiale, UMR 8617, 91405 Orsay, France CNRS, 9145 Orsay, France
M. Noun
Affiliation:
Université Paris-Sud 11, IPNO, UMR 8608, 91405 Orsay, France Lebanese Atomic energy Commission, National Council for Scientific Research, PO Box 11-8281, Beirut, Lebanon
S. Della Negra
Affiliation:
Université Paris-Sud 11, IPNO, UMR 8608, 91405 Orsay, France
L. Le Sergeant d’Hendecourt
Affiliation:
Université Paris-Sud 11, Astrochimie et Origines, Institut d’Astrophysique Spatiale, UMR 8617, 91405 Orsay, France

Abstract

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Interstellar ices are widely observed in the infrared spectra of regions where stars and planetary systems form. Photochemical and thermal evolution of these ices is simulated and studied in our laboratory where the resulting production of complex organic residues is routinely performed. Observations of their variability with slightly different starting chemical conditions can be performed by means of infrared spectroscopy. Organic residues have interesting chemical properties that make them good potential candidates for prebiotic chemistry. Numerous other analytical methods (GC-MS, HPLC, mass spectrometry, etc.) can be combined to refine the knowledge of their chemical composition and structure. We present here some results on the obtained organic residue resulting from subsequent heating and sublimation of the irradiated ices which show the formation of some macromolecular species.

Type
Research Article
Copyright
© The Author(s) 2013

References

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