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- Title
Unidentified Infrared Emission Features.
- Authors
Joblin, Christine
- Abstract
When 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.
- Publication
Proceedings of the International Astronomical Union, 2012, Vol 10, Issue H16, p699
- ISSN
1743-9213
- Publication type
Article
- DOI
10.1017/S1743921314012952