Simple linear polycyclic aromatic hydrocarbon molecules and the infrared emission features - Mothballs in the Orion ridge?

1990 ◽  
Vol 351 ◽  
pp. L49 ◽  
Author(s):  
W. W. Duley ◽  
A. P. Jones
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Infrared Emission ◽  
Polycyclic Aromatic ◽  
Hydrocarbon Molecules

scholarly journals Unidentified Infrared Emission Features

2012 ◽  
Vol 10 (H16) ◽  
pp. 699-700 ◽  
Author(s):  
Christine Joblin
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Infrared Emission ◽  
Interstellar Matter ◽  
Physical Conditions ◽  
Evolutionary Scenario ◽  
Polycyclic Aromatic ◽  
Aromatic Species ◽  
Hydrocarbon Molecules ◽  
Uv Photons ◽  
Ir Bands

AbstractWhen referring to unidentified infrared emission features, one has in mind the series of aromatic IR bands (AIBs) between 3.3 and 15 μm that are observed in emission in many environments where UV photons irradiate interstellar matter. These bands are now used by astronomers to classify objects and characterize local physical conditions. However, a deep analysis cannot proceed without understanding the properties of the band carriers. Large polycyclic aromatic hydrocarbon molecules are attractive candidates but interstellar species are still poorly characterized. Various studies emphasize the need for tackling the link between molecular aromatic species, aliphatic material and very small carbonaceous grains. Other unidentified emission features such as the 6.9, 21 and 30 μm bands could be involved in the evolutionary scenario.

scholarly journals IONIZATION OF POLYCYCLIC AROMATIC HYDROCARBON MOLECULES AROUND THE HERBIG Ae/Be ENVIRONMENT

2011 ◽  
pp. 143-154
Author(s):  
ITSUKI SAKON ◽  
TAKASHI ONAKA ◽  
YOSHIKO K. OKAMOTO ◽  
HIROKAZU KATAZA ◽  
HIDEHIRO KANEDA ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Polycyclic Aromatic ◽  
Hydrocarbon Molecules

scholarly journals Chemistry of Molecular Clouds

1989 ◽  
Vol 120 ◽  
pp. 2-12
Author(s):  
A. Dalgarno
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Ultraviolet Radiation ◽  
Aromatic Hydrocarbon ◽  
Molecular Clouds ◽  
Cosmic Ray ◽  
Radiation Fields ◽  
Polycyclic Aromatic ◽  
Hydrocarbon Molecules ◽  
Ultraviolet Photons

AbstractA discussion is presented of the chemistry of quiescent molecular clouds, and the effects of the presence of polycyclic aromatic hydrocarbon molecules and of cosmic-ray induced ultraviolet photons are examined. A comparison is made with the chemistry occurring in molecular clouds that are subjected to shocks and the differences between dissociative and non-dissociative shocks are described. The changes in composition caused by intense cosmic ray fluxes or intense ultraviolet radiation fields are explored.

Energetics and Electronic Structures of Carbon Nanotubes Encapsulating Polycyclic Aromatic Hydrocarbon Molecules

2014 ◽  
Vol 83 (12) ◽  
pp. 124709 ◽  
Author(s):  
Shota Kigure ◽  
Yoko Iizumi ◽  
Toshiya Okazaki ◽  
Susumu Okada
Keyword(s):  
Carbon Nanotubes ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Structures ◽  
Polycyclic Aromatic ◽  
Hydrocarbon Molecules

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

1992 ◽  
Vol 396 ◽  
pp. 369 ◽  
Author(s):  
L. Colangeli ◽  
V. Mennella ◽  
G. A. Baratta ◽  
E. Bussoletti ◽  
G. Strazzulla
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Infrared Spectra ◽  
Astrophysical Interest ◽  
Polycyclic Aromatic ◽  
Hydrocarbon Molecules

Infrared emission from a polycyclic aromatic hydrocarbon (PAH) excited by ultraviolet laser

1989 ◽  
Vol 341 ◽  
pp. L21 ◽  
Author(s):  
Isabelle Cherchneff ◽  
John R. Barker
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Infrared Emission ◽  
Ultraviolet Laser ◽  
Polycyclic Aromatic

scholarly journals Identification of stable configurations in the superhydrogenation sequence of polycyclic aromatic hydrocarbon molecules

2019 ◽  
Vol 486 (4) ◽  
pp. 5492-5498 ◽  
Author(s):  
Pernille A Jensen ◽  
Mirko Leccese ◽  
Frederik D S Simonsen ◽  
Anders W Skov ◽  
Matteo Bonfanti ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Polycyclic Aromatic ◽  
Hydrocarbon Molecules
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