Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...51..389h&link_type=abstract
Astronomy and Astrophysics Supplement Series, vol. 51, Mar. 1983, p. 389-416. Research supported by the Nederlandse Organisatie
Astronomy and Astrophysics
Astronomy
63
Hydrogen Bonds, Ice, Infrared Astronomy, Infrared Spectra, Interstellar Matter, Absorption Spectra, Ammonia, Carbon Monoxide, Cyanides, Formaldehyde, Hydrogen Peroxide, Interstellar Chemistry, Methane, Methyl Compounds, Spectrum Analysis
Scientific paper
The 3 μm {ice} band observed in absorption and polarization and other absorption features in interstellar infrared spectra are studied in the laboratory in low temperature (10-130K) solid mixtures of H2O and other molecules. General empirical rules are derived which relate the shape and relative intensity of the H2O infrared absorptions to thermal history, degree of H2O dilution and hydrogen bonding capacity of the dilutant. Observations of specific features anticipated in low noise medium resolution spectra will yield potentially valuable information on the degree of H2O dilution, the nature of the dilutant and the thermal history of the absorbing solid mixture. Under well defined conditions the peak of the hitherto unobserved librational {12 μm} H2O absorption is shifted to outside the current infrared observation window beyond 13.5 μm.
Greenberg Mayo J.
Hagen Wim
Tielens Alexander G. G. M.
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