PAH emissions
(polycyclic aromatic hydrocarbon emissions)
(infrared emission from polycyclic aromatic hydrocarbons in gas clouds)
PAH emissions (polycyclic aromatic hydrocarbon emissions)
are infrared emissions (spectral lines)
from molecular clouds.
Polycyclic aromatic hydrocarbons (PAHs) are organic materials with two or more
benzene rings.
They are hydrocarbons with 50-100 (or more) carbon atoms
and constitute a pollutant in Earth atmosphere.
Star-forming regions can form them
and they can be detected by the infrared radiation.
They produce emission features at
3.3, 6.2, 7.7, 8.6, and 11.2 micrometers.
It is considered likely that such PAHs are formed
by giant carbon stars.
The term PAH emission is also commonly used regarding
activities on Earth that produce PAHs, e.g., in reports on
air pollution.
(emission,chemistry,molecular gas)
Further reading:
https://en.wikipedia.org/wiki/Polycyclic_aromatic_hydrocarbon
https://www.astrochemistry.org/pahdb/theoretical/3.20/default/view
https://ui.adsabs.harvard.edu/abs/1986MNRAS.219..859D/abstract
https://ui.adsabs.harvard.edu/abs/1999ApJ...516L..41H/abstract
https://ui.adsabs.harvard.edu/abs/2005ApJ...632..316H/abstract
https://ui.adsabs.harvard.edu/abs/2008IAUS..251..357S/abstract
https://ui.adsabs.harvard.edu/abs/2011EAS....46...13P/abstract
https://ui.adsabs.harvard.edu/abs/2011IAUS..280..149P/abstract
Referenced by pages:
polycyclic aromatic hydrocarbon (PAH)
spectral band
Index