The ultraviolet and visible spectrum of the polycyclic aromatic hydrocarbon C10H8(+) - Possible contributions to the diffuse interstellar bands and to the ultraviolet-visible extinction
1992; IOP Publishing; Volume: 395; Linguagem: Inglês
10.1086/171652
ISSN1538-4357
AutoresFarid Salama, L. J. Allamandola,
Tópico(s)Atmospheric Ozone and Climate
Resumoview Abstract Citations (96) References (26) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Ultraviolet and Visible Spectrum of the Polycyclic Aromatic Hydrocarbon C 10H 8 +: Possible Contributions to the Diffuse Interstellar Bands and to the Ultraviolet--Visible Extinction Salama, F. ; Allamandola, L. J. Abstract The properties of the cation of the PAH naphthalene (C10H8(+)) isolated in inert gas matrices under conditions relevant to astrophysical environments are described. The band at 6741 A is the strongest and falls close to the weak 6742 A diffuse interstellar bands (DIBs). Five other weaker bands also fall remarkably close to the positions of known DIBs. A very intense and broad continuum extended from the UV to the visible, which seems to be associated with the ion, is reported. The molar absorption coefficient at the peak of the continuum is 2.0 x 10 exp 6 cu dm/mol cm. If a continuum is a general property of PAH cations, this characteristic will have a strong impact on the understanding of how PAHs convert interstellar UV and visible radiation into IR radiation. Publication: The Astrophysical Journal Pub Date: August 1992 DOI: 10.1086/171652 Bibcode: 1992ApJ...395..301S Keywords: Aromatic Compounds; Cyclic Hydrocarbons; Interstellar Extinction; Naphthalene; Ultraviolet Spectra; Visible Spectrum; Absorption Spectra; Interstellar Matter; Molecular Ions; Positive Ions; Spectral Bands; Atomic and Molecular Physics; ISM: MOLECULES; LINE: IDENTIFICATION; MOLECULAR DATA full text sources ADS | data products SIMBAD (6)
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