Raman and infrared spectra of polycyclic aromatic hydrocarbon molecules of possible astrophysical interest

Abstract

view Abstract Citations (44) References (28) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Raman and Infrared Spectra of Polycyclic Aromatic Hydrocarbon Molecules of Possible Astrophysical Interest Colangeli, L. ; Mennella, V. ; Baratta, G. A. ; Bussoletti, E. ; Strazzulla, G. Abstract A laboratory analysis is performed by means of Raman and IR spectroscopy on six polycyclic aromatic hydrocarbons (PAHs) which are among the most stable and the most abundant PAHs suggested as an important constituent of interstellar matter. The Raman spectrum of PAHs exhibits intense peaks around 1350 and 1600/cm, falling close to the two broad bands observed from interplanetary dust particles (IDPs). They are sharper, however, and therefore appear less appropriate to simulate the Raman spectra of IDPs than the spectra of amorphous carbons. The analysis of their IR spectra suggests that physical processes capable of altering the spectral properties of PAHs have to be invoked to obtain a better match with astronomical spectral. Publication: The Astrophysical Journal Pub Date: September 1992 DOI: 10.1086/171723 Bibcode: 1992ApJ...396..369C Keywords: Aromatic Compounds; Cyclic Hydrocarbons; Infrared Spectra; Interstellar Matter; Raman Spectra; Cosmic Dust; Interstellar Extinction; Astrophysics; INFRARED: INTERSTELLAR: LINES; ISM: DUST; EXTINCTION; MOLECULAR DATA full text sources ADS |