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

Fraser, H J and Collings, M P and Dever, J W and McCoustra, M R S (2004) Using laboratory studies of CO-H2O ices to understand the non-detection of a 2152 cm(-1) (4.647 mu m) band in the spectra of interstellar ices. Monthly Notices of the Royal Astronomical Society, 353 (1). pp. 59-68. ISSN 0035-8711

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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.

Author(s):Fraser, H J, Collings, M P, Dever, J W and McCoustra, M R S
Item type:Article
ID code:34237
Keywords:astrochemistry, line identification, molecular data, mass protostellar envelopes, microporous amorphous ice, infrared , spectroscopy, absorption, molecular beams, Solid state physics. Nanoscience, Astronomy and Astrophysics, Space and Planetary Science
Subjects:Science > Physics > Solid state physics. Nanoscience
Department:Faculty of Science > Physics
Depositing user: Pure Administrator
Date deposited:24 Oct 2011 11:16
Last modified:27 Sep 2019 02:26
URI:https://strathprints.strath.ac.uk/id/eprint/34237
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