Some `Solid Facts' on Interstellar Dust |
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Authors: | WW Duley VI Grishko |
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Institution: | (1) Physics Department, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1 E-mail |
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Abstract: | Despite considerable observational information on infrared absorption and emission spectra of interstellar matter, together
with extensive laboratory data on the spectra of possible constituents, there are presently few firm identifications of individual
chemical components. Simple chemical compounds including H2O, CO and CO2 are detected in dust in dark interstellar clouds, but other molecules such as ethane, acetylene and benzene do not appear
to be present with appreciable abundance. Nevertheless, IR spectra show that hydrocarbons are aubiquitous component of interstellar
matter. The nature of these materials and their relation to specific molecular components is discussed in this paper.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | a:carbon dust IR molecules |
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