Profile of CH _4 IR bands in ice mixtures
Abstract
We studied the infrared spectral characteristics of frozen methane ( CH _4 ) in several astrophysically relevant ice mixtures, as deposited and after ion irradiation. We examined the profile (shape, width and peak position) of the CH _4 bands as a function of initial mixture, irradiation dose and warming up temperature, and compared our results with previously published laboratory and observational data. Finally, we present a list of spectra that may be used for direct comparison with present and future observations.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- May 1998
- Bibcode:
- 1998A&A...333.1025M
- Keywords:
-
- MOLECULAR DATA;
- MOLECULAR PROCESSES;
- DUST;
- EXTINCTION;
- ISM: MOLECULES;
- INFRARED: ISM: LINES AND BANDS;
- METHODS: LABORATORY