Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...629.1188m&link_type=abstract
The Astrophysical Journal, Volume 629, Issue 2, pp. 1188-1210.
Astronomy and Astrophysics
Astronomy
27
Astrochemistry, Ism: Dust, Extinction, Ism: General, Ism: Molecules, Molecular Data
Scientific paper
The near-infrared (NIR) spectra and absolute band strengths of 27 polycyclic aromatic hydrocarbon (PAH) cations and anions ranging in size from C14H10 to C50H22 are reported. The spectra of all the ionized PAHs we have studied to date have strong, broad absorption bands in the NIR. This work shows that ionized PAHs have significant absorption bands at wavelengths longer than predicted by the current astronomical models that consider PAHs in their treatment of the radiation balance of the interstellar medium. Two implications are (1) that ionized/open-shell interstellar PAHs should add weak, broadband structure to the NIR portion of the interstellar extinction curve and (2) that UV-poor radiation fields can pump the PAH emission bands, provided ionized/open-shell PAHs are present.
Allamandola Louis J.
Hudgins Douglas M.
Mattioda Andrew L.
No associations
LandOfFree
Experimental Near-Infrared Spectroscopy of Polycyclic Aromatic Hydrocarbons between 0.7 and 2.5 μm does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Experimental Near-Infrared Spectroscopy of Polycyclic Aromatic Hydrocarbons between 0.7 and 2.5 μm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Experimental Near-Infrared Spectroscopy of Polycyclic Aromatic Hydrocarbons between 0.7 and 2.5 μm will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1347094