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A Combined Experimental and Theoretical Study on the Formation of the Amino Acid Glycine (NH2CH2COOH) and Its Isomer (CH3NHCOOH) in Extraterrestrial Ices
We have investigated the synthesis of the simplest aminoacid, glycine, by Galactic cosmic-ray particles inExpand
Calculations on the Formation Rates and Mechanisms for CnH Anions in Interstellar and Circumstellar Media
The rate coefficients for the radiative attachment reactions between the radicals CnH ( -->n = 2?8) and electrons have been calculated with the aid of quantum chemistry using a phase-space theory inExpand
Detection of C6H– toward the Low-Mass Protostar IRAS 04368+2557 in L1527
We have detected the J = 7-6, 8-7, and 15-14 lines of C6H- toward a low-mass star-forming region of L1527. We have also detected the J = 15/2-13/2 and 33/2-31/2 lines of the corresponding neutralExpand
Production Pathways of CCS and CCCS Inferred from Their 13C Isotopic Species
The rotational spectral lines (JN = 32-21 and JN = 21-10) of 13CCS and C13CS have been observed toward a cold dark cloud, TMC-1. The strongest hyperfine component lines of 13CCS and C13CS (JN =Expand
A combined experimental and computational investigation on the synthesis of acetaldehyde [CH3CHO(X 1A')] in interstellar ices
The synthetic routes to form acetaldehyde (CH3CHO(X 1 A 0 )) in extraterrestrial ices were investigated experi- mentally in a contamination-free ultrahigh vacuum scattering machine. Binary iceExpand
Laboratory Studies on the Irradiation of Methane in Interstellar, Cometary, and Solar System Ices
Pure methane ices (CH4) were irradiated at 10 K with energetic electrons to mimic the energy transfer processes that occur in the track of the trajectories of MeV cosmic-ray particles. TheExpand
Coexistence of Neutral and Ion-Pair Clusters of Hydrated Sulfuric Acid H2SO4(H2O)n (n = 1−5)A Molecular Orbital Study
Various isomeric structures of the hydrated clusters of sulfuric acid, H2SO4(H2O)n (n = 1−5), are examined using a density functional molecular orbital method. Due to the small energy differenceExpand
A New Dimension to Quantum Chemistry: Analytic Derivative Methods in AB Initio Molecular Electronic Structure Theory
In modern theoretical chemistry, the importance of the analytic evaluation of energy derivatives from reliable wave functions can hardly be overestimated. This monograph presents the formulation andExpand
Laboratory studies on the formation of three C2H4O isomers-acetaldehyde (CH3CHO), ethylene oxide (C-C2H4O), and vinyl alcohol (CH2CHOH)-in interstellar and cometary ices
Laboratory experiments were conducted to unravel synthetic routes to form three C2H4O isomers—acetaldehydeExpand