Laboratory spectra of CO2 in planetary ice analogs

Details Laboratory spectra of CO2 in planetary ice analogs Laboratory spectra of CO2 in planetary ice analogs

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..261w&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.261

Physics

Scientific paper

CO2 is a powerful diagnostic tool for analyzing remote IR data, as it has been detected on icy moons in the outer solar system. IR absorption profiles of CO2 within ice mixtures containing H2O and CH3OH change with respect to temperature and mixture ratios. Laboratory analogs facilitate understanding of the interactions of CO2 molecules with H2O and CH3OH. In this particular study, the CO2 stretch mode around 4.3 μm (2350 cm-1) is systematically observed in different mixtures with H2O and CH3OH in temperature ranges from 15K to 150K, as well as vibrational modes in the near-IR such as the combination bands near 2.7 μm (3700 cm-1) and 2.0 μm (5080 cm-1). These data may then be used to assist with interpretation of spectra from icy planetary surfaces.

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