Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...722.1932r&link_type=abstract
The Astrophysical Journal, Volume 722, Issue 2, pp. 1932-1938 (2010).
Astronomy and Astrophysics
Astronomy
1
Astrochemistry, Infrared: Ism, Ism: Lines And Bands, Ism: Molecules, Molecular Data
Scientific paper
Fourier-transform, mid-infrared absorption spectra of mixed argon/naphthalene matrices at 5 K are shown with ratios of argon-to-naphthalene that vary from 1000 to 0. These spectra show the changes as naphthalene clustering and aggregation occurs, with moderate spectral shifts affecting the C-H vibrational modes and relatively small or no shifts to the C-C and C-C-C vibrational modes. The possible contribution of homogeneous naphthalene clusters to the interstellar unidentified infrared bands is discussed. The contribution of polycyclic aromatic hydrocarbon (PAH) clusters to the 7.7 μm emission plateau and the blue shading of the 12.7 μm emission band are identified as promising candidates for future research. In addition, since PAH clusters are model components of Jupiter and Titan's atmospheres, the information presented here may also be applicable to the spectroscopy of these objects.
Allamandola Louis J.
Roser Joe E.
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