Energetic and thermal processing of interstellar ices
| Autor: | Steven B. Charnley, R. Ruiterkamp, Louis Le Sergeant d'Hendecourt, Pascale Ehrenfreund |
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| Rok vydání: | 2001 |
| Předmět: |
Atmospheric Science
Materials science Ecology Infrared Molecular cloud Photodissociation Paleontology Soil Science Forestry Context (language use) Aquatic Science Oceanography Astrobiology Interstellar medium Chemical state Geophysics Space and Planetary Science Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Protostar Astrophysics::Earth and Planetary Astrophysics Spectroscopy Astrophysics::Galaxy Astrophysics Earth-Surface Processes Water Science and Technology |
| Zdroj: | Journal of Geophysical Research: Planets. 106:33291-33301 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/2000je001349 |
| Popis: | Our current knowledge on the chemical composition of interstellar ices is summarized with respect to the possible contribution of energetic photons and particles to their observed state. We describe the inventory of astronomical ices as determined by infrared observations from the Infrared Space Observatory (ISO) and laboratory spectroscopy. Sources of radiolysis, UV photolysis, and ice heating are then discussed in the context of the chemical state of material in dense molecular clouds and in protostellar cores. Through specific examples we show how energetic processing can explain the observed solid-state characteristics of several key molecules: CH 3 OH, CO 2 , and OCN-. We also discuss the gaseous and solid-state photochemistry of the first organic acid detected in interstellar ices, HCOOH. |
| Databáze: | OpenAIRE |
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