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Record 15 of 12260
Spectroscopic diagnostics of organic chemistry in the protostellar environment
External Online Source: doi:10.1016/S1386-1425(00)00437-6
Author and Affiliation:
Charnley, S. B.(NASA Ames Research Center, Moffett Field CA United States)
Ehrenfreund, P.
Kuan, Y. J.
Abstract: A combination of astronomical observations, laboratory studies, and theoretical modelling is necessary to determine the organic chemistry of dense molecular clouds. We present spectroscopic evidence for the composition and evolution of organic molecules in protostellar environments. The principal reaction pathways to complex molecule formation by catalysis on dust grains and by reactions in the interstellar gas are described. Protostellar cores, where warming of dust has induced evaporation of icy grain mantles, are excellent sites in which to study the interaction between gas phase and grain-surface chemistries. We investigate the link between organics that are observed as direct products of grain surface reactions and those which are formed by secondary gas phase reactions of evaporated surface products. Theory predicts observable correlations between specific interstellar molecules, and also which new organics are viable for detection. We discuss recent infrared observations obtained with the Infrared Space Observatory, laboratory studies of organic molecules, theories of molecule formation, and summarise recent radioastronomical searches for various complex molecules such as ethers, azaheterocyclic compounds, and amino acids.
Publication Date: Mar 15, 2001
Document ID:
20040112455
(Acquired Oct 05, 2004)
Subject Category: LIFE SCIENCES (GENERAL)
Document Type: Journal Article
Publication Information: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy; p. 685-704; (ISSN 1386-1425); Volume 57; 4
Publisher Information: United Kingdom
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AMINO ACIDS; ASTRONOMY; DIAGNOSIS; ETHERS; ORGANIC CHEMISTRY; SPECTROSCOPY; COSMIC DUST; SPECTRUM ANALYSIS
Other Descriptors: AMINO ACIDS/ANALYSIS/CHEMICAL SYNTHESIS/CHEMISTRY; ASTRONOMY; ETHERS/ANALYSIS/CHEMICAL SYNTHESIS/CHEMISTRY; COSMIC DUST/ANALYSIS; SPECTRUM ANALYSIS/METHODS; SUPPORT, NON-U.S. GOV'T; SUPPORT, U.S. GOV'T, NON-P.H.S
Availability Source: Other Sources
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