The Temperature Dependence of the CO Infrared Band Strength in CO: H 2O Ices
Abstract
Experimental results on the temperature dependence of the C-triple-bond-O stretch band of CO in H20 ices are presented, and the astrophysical significance of the results is discussed. When CO is trapped in water-rich ice mixtures, the 2137/cm and 2152/cm absorptions are found to undergo irreversible changes in shape upon warmup. The present results suggest that, for interstellar grains, the amount of solid CO embedded in water-rich ice mantles may be underestimated by as much as 40 percent.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- May 1989
- DOI:
- 10.1086/185432
- Bibcode:
- 1989ApJ...340L..33S
- Keywords:
-
- Carbon Monoxide;
- Infrared Spectra;
- Interstellar Matter;
- Molecular Clouds;
- Temperature Dependence;
- Absorption Spectra;
- Astronomical Spectroscopy;
- Ice Nuclei;
- Astrophysics;
- INFRARED: SPECTRA;
- INTERSTELLAR: ABUNDANCES;
- INTERSTELLAR: GRAINS;
- INTERSTELLAR: MOLECULES;
- LABORATORY SPECTRA;
- LINE PROFILES