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

Related Subjects

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