Near-IR Band Strengths of Molecules Diluted in Nitrogen and Water Ices

Details Near-IR Band Strengths of Molecules Diluted in Nitrogen and Water Ices Near-IR Band Strengths of Molecules Diluted in Nitrogen and Water Ices

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.4817r&link_type=abstract

American Astronomical Society, DPS meeting #42, #48.17

Astronomy and Astrophysics

Astrophysics

Scientific paper

In order to determine the column density of a component of an ice from its infrared absorption features, the strengths of these features must be known. The peak positions, widths, profiles, and strengths of a certain ice component's infrared absorption features are affected be the overall composition of the ice (Quirico et al. 1999). Many satellites within the solar system have surfaces that are dominated by either N2 or H2O (Roush 2001). The experiments presented here focus on the near -infrared absorption features of CO, CO2, CH4, and NH3 (λ =10,000-4,000 cm-1, ν =1-2.5 μm) and the effects of diluting these molecules in N2 and H2O ice (dilution of 5:1). This is a continuation of previous results published by the Astro- and Solar-System Program at UAB by Gerakines et al. (2005). These data may be used to determine ice abundances from observed near-IR spectra or to predict the sizes of near-IR features in astrophysical environments.

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