The infrared emissions from a gaseous ionic polycyclic aromatic hydrocarbon (PAH) over the ubiquitous interstellar unidentified infrared emission band (UIR) range were analyzed. The pyrene cation infrared emissions with relative intensities consistent with astrophysical observations were observed. The measured spectrum of the pyrene cation agrees with the major UIR feature intensities thus providing support for the PAH hypothesis.
ASJC Scopus subject areas
- Physics and Astronomy(all)