Direct photodissociation of CH bonds in polycyclic aromatic hydrocarbons - Implications for the infrared emission bands

Journal Article · Tue Aug 01 00:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167697· OSTI ID:5556404

Buch, V ^[1]

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1. Illinois Univ., Chicago (USA)

Direct photodissociation is proposed as an important destruction mechanism for the CH bonds in large interstellar molecules exposed to UV radiation. The implications for the unidentified infrared emission bands (UIR) are examined assuming that polycyclic aromatic hydrocarbons (PAHs) are the carriers of the bands. Direct photodissociation can account for extensive dehydrogenation of PAHs which was inferred from the analysis of UIR spectra. 35 refs.

• OSTI ID: 5556404
• Journal Information: Astrophysical Journal; (USA), Vol. 343; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
HYDROCARBONS
COSMOCHEMISTRY
INTERSTELLAR SPACE
CHEMICAL COMPOSITION
CHEMICAL BONDS
DISSOCIATION
EMISSION SPECTRA
INFRARED SPECTRA
PHOTOCHEMICAL REACTIONS
CHEMICAL REACTIONS
CHEMISTRY
ORGANIC COMPOUNDS
SPACE
SPECTRA
640105* - Astrophysics & Cosmology- Galaxies