Profile of the CO_2 bands produced after ion irradiation of ice mixtures
Abstract
We have studied the infrared spectral characteristics of frozen carbon dioxide (CO_2) formed after ion irradiation of several astrophysically relevant ice mixtures at 10 K. Carbon dioxide is in fact readily produced by ion irradiation of icy samples of CO, and CH_3OH and mixtures H_2O:CO, CO:O_2, CO:N_2, H_2O:CH_3OH, H_2O:CH_4, H_2O:CH_4:NH_3. We have studied the profile (shape, width and peak position) of the CO_2 bands as a function of initial mixture, irradiation dose and warming up temperature.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- June 1998
- Bibcode:
- 1998A&A...334..247P
- Keywords:
-
- ISM: MOLECULES;
- DUST;
- EXTINCTION;
- INFRARED: ISM: LINES AND BANDS