Estimation of CIRS Sensitivity to Trace Constituents in Saturn's Main Rings

Details Estimation of CIRS Sensitivity to Trace Constituents in Saturn's Main Rings Estimation of CIRS Sensitivity to Trace Constituents in Saturn's Main Rings

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.p13a1299n&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #P13A-1299

Physics

6265 Planetary Rings

Scientific paper

Several instruments on the Cassini spacecraft have been employed to analyze the composition of Saturn's main rings. Despite this, the identities of the compounds that color the rings remain elusive. Cassini's Composite Infrared Spectrometer has returned tens of thousands of spectra from the main rings. These far infrared spectra (10 cm-1 to 600 cm-1) are comprised of radiation that has been highly scattered by ring particles' regolith. This scattering reduces the magnitude of absorption features, increasing the difficulty of distinguishing these features from the instrument's noise. To assist the search for these features, we use a simple model of Mie scattering spheres to estimate what concentrations of trace materials might be detected by CIRS. This allows us to determine the extent to which the current data can be used and whether new observations are necessary.

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