The ongoing quest to identify molecules in the interstellar medium by their electronic spectra in the visible region is reviewed. Identification of molecular absorption is described in the context of the elucidation of the carriers of the unidentified Diffuse Interstellar Bands, and molecular emission is discussed with reference to the unidentified Red Rectangle bands. The experimental techniques employed in undertaking studies on the optical spectroscopy of extraterrestrial molecules are described and critiqued in the context of their application.
Australian Journal of Chemistry
- Pub Date:
- January 2005
- molecular data;
- ISM lines and bands;
- ISM molecules;
- 21 pages, 9 figures, Invited review Australian Journal of Chemistry, accepted for publication