Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...396..369c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 396, no. 1, Sept. 1, 1992, p. 369-377. Research supported by ASI, CNR, and
Astronomy and Astrophysics
Astrophysics
20
Aromatic Compounds, Cyclic Hydrocarbons, Infrared Spectra, Interstellar Matter, Raman Spectra, Cosmic Dust, Interstellar Extinction
Scientific paper
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.
Baratta Giuseppa A.
Bussoletti Ezio
Colangeli Luigi
Mennella Vito
Strazzulla Giovanni
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