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Using laboratory studies of CO-H2O ices to understand the non-detection of a 2152 cm-1 (4.647 µm) band in the spectra of interstellar ices

Fraser, Helen J.; Collings, Mark P.; Dever, John W. and McCoustra, Martin R. S. (2004). Using laboratory studies of CO-H2O ices to understand the non-detection of a 2152 cm-1 (4.647 µm) band in the spectra of interstellar ices. Monthly Notices of the Royal Astronomical Society, 353(1) pp. 59–68.

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URL: http://mnras.oxfordjournals.org/content/353/1/59.f...
DOI (Digital Object Identifier) Link: https://doi.org/10.1111/j.1365-2966.2004.08038.x
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Abstract

We present results from laboratory experiments on layered CO–H2O-ice systems, carried out from sub-monolayer to multilayer CO coverages, and review recent experimental data, as published by the authors. Under certain specific laboratory conditions the 2152 cm−1 feature, associated with CO molecules adsorbed at dangling-OH bonds at the ice surface, is ‘missing’. A detailed analysis is used to understand why the same feature is not detected in spectra of interstellar ices. We conclude that the dangling-OH sites do exist in interstellar ices but that the sites are blocked by another species. The astronomical implications of this deduction are discussed.

Item Type: Journal Item
Copyright Holders: 2004 RAS
ISSN: 1365-2966
Keywords: astrochemistry; molecular data; lines and bands – infrared
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 37304
Depositing User: Stephen Serjeant
Date Deposited: 20 Jun 2013 09:16
Last Modified: 19 Dec 2017 10:04
URI: http://oro.open.ac.uk/id/eprint/37304
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