On the nature of unidentified cometary emission lines

Details On the nature of unidentified cometary emission lines On the nature of unidentified cometary emission lines

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sosyr..41..129s&link_type=abstract

Solar System Research, Volume 41, Issue 2, pp.129-131

Computer Science

1

96.25.-F, 96.30.-T, 96.30.Cw, 96.50.-E, 96.50.Bh

Scientific paper

The nature of unidentified cometary emission lines is discussed. A model of ice particles in cometary halos as a mixture of frozen polycyclic aromatic hydrocarbons (PAHs) and acyclic hydrocarbons is considered. The properties of frozen hydrocarbon particles are described and 5 7% of the unidentified cometary emission lines are considered as the photoluminescence of frozen hydrocarbons. The positions of unidentified emission lines in the spectrum of Comet 19P/Borrelly are compared with the positions of quasi-lines in the photoluminescence spectra of PAHs that were dissolved in acyclic hydrocarbons at a temperature of 77 K and that constitute a polycrystalline solution.

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