Results 91 to 100 of about 7,455 (223)
Interstellar Molecules in Meteorites [PDF]
Symposium - International Astronomical Union, 1989 Substantial enrichment of deuterium, D, in certain components of chondritic meteorites is interpreted as a record of isotopic fractionation during ion-molecule reactions at the very low temperatures characteristic of dense interstellar clouds. Whether those meteorites still contain the actual molecules that were synthesised in the presolar interstellar
openaire +1 more source
Protonated interstellar ions of diatomic molecules : quantum-mechanical predictions
, 2004 The present role of Quantum Chemistry in the field of interstellar molecules is illustrated by structure and reactivity studies concerning the (CS + H) +, (SiO + H)+, (SiS + H ...
G. Berthier
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The Astrophysical JournalOxygen-containing complex organic molecules are key precursors to biorelevant compounds fundamental for the origins of life. However, the untangling of their interstellar formation mechanisms has just scratched the surface, especially for oxygen ...
Jia Wang +3 more
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Six Phases of Cosmic Chemistry [PDF]
, 2013 The article presents a conceptually unified, quantitative account of the development of chemical phenomena throughout the cosmic history, with a detailed discussion of the cosmological, astrophysical, geological, biological and anthropological context ...
Lamza, Lukasz
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The Astrophysical Journal LettersHydrogen cyanide (HCN) molecules serve as an important tracer for the chemical evolution of elemental nitrogen in the regions of star and planet formation.
Maksim Ozhiganov +10 more
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Photoabsorption and photodissociation of molecules important in the interstellar medium
, 1993 The photo absorption, photo dissociation, and fluorescence cross sections of interstellar molecules and radicals were measured in the vacuum ultraviolet region. These quantitative optical data are useful for understanding of the formation and destruction
Lee, Long C., Suto, Masako
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Observations of molecules in diffuse interstellar clouds
, 1993 We present results from observations of diffuse interstellar clouds, with discussion of their significance and including a historical survey to put the recent work into perspective.
Somerville, W.B., Crawford, Ian
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The Astrophysical JournalInterstellar dust grains are enveloped by ices of frozen molecules in cold, dense regions of the interstellar medium (ISM), which are also observed in the gas phase. Whether a species is in the solid or gaseous state is governed by its binding energy (BE)
Harjasnoor Kakkar +4 more
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Spectroscopic properties of interstellar molecules: Theory and experiment
, 2003 Over the past two decades, the identification and characterisation of interstellar molecules has often benefitted from a fruitful interplay between theoretical chemistry, laboratory spectroscopy and ( radio) astronomy.
Botschwina, Peter
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