Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...10633291e&link_type=abstract
Journal of Geophysical Research, Volume 106, Issue E12, p. 33291-33302
Astronomy and Astrophysics
Astronomy
14
Planetology: Comets And Small Bodies: Dust, Planetology: Comets And Small Bodies: Ice, Planetology: Comets And Small Bodies: Radiation And Spectra, Planetology: Solar System Objects: Extraterrestrial Materials
Scientific paper
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: CH3OH, CO2, and OCN-. We also discuss the gaseous and solid-state photochemistry of the first organic acid detected in interstellar ices, HCOOH.
Charnley Steven
d'Hendecourt Louis
Ehrenfreund Pascale
Ruiterkamp Richard
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