Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008oleb...38...37n&link_type=abstract
Origins of Life and Evolution of Biospheres, Volume 38, Issue 1, pp.37-56
Astronomy and Astrophysics
Astrophysics
21
Amino Acids, Interstellar Medium (Ism), Laboratory Simulations, Molecular Processes, Uv Irradiation
Scientific paper
We present a detailed analysis of the variety, quantity and distribution of the amino acids detected in organic residues after acid hydrolysis. Such organic residues are produced in the laboratory after the vacuum ultraviolet (VUV) irradiation of several astrophysically relevant ice mixtures containing H2O, CO, CO2, CH3OH, CH4 and NH3 at low temperature (10-80 K), and subsequent warm-up to room temperature. We explore five experimental parameters: the irradiation time, the temperature, the ice mixture composition, the photon dose per molecule and the substrate for the ice deposition. The amino acids were detected and identified by ex-situ liquid chromatography analysis of the organic residues formed after warming the photolysed ices up to room temperature. This study shows that in all experiments amino acids are formed. Their total quantities and distribution depend slightly on the experimental parameters explored in the present work, the important requirement to form such molecules being that the starting ice mixtures must contain the four elements C, H, O and N. We also discuss the effects of the chemical treatment needed to detect and identify the amino acids in the organic residues. Finally, these results are compared with meteoritic amino acid data from the carbonaceous chondrite Murchison, and the formation processes of such compounds under astrophysical conditions are discussed.
Auger Geneviève
Blanot Didier
d'Hendecourt Louis
Nuevo Michel
No associations
LandOfFree
A Detailed Study of the Amino Acids Produced from the Vacuum UV Irradiation of Interstellar Ice Analogs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Detailed Study of the Amino Acids Produced from the Vacuum UV Irradiation of Interstellar Ice Analogs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Detailed Study of the Amino Acids Produced from the Vacuum UV Irradiation of Interstellar Ice Analogs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1528894