On the nature of unidentified cometary emission lines |
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Authors: | I A Simonia |
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Institution: | (1) Shemakha Astrophysical Observatory, National Academy of Sciences of Azerbaijan, Shemakha, Azerbaijan |
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Abstract: | 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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Keywords: | 96 25 -f 96 30 -t 96 30 Cw 96 50 -e 96 50 Bh |
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