VMT, the DAWN/VIR Mineralogy Tool to retrieve Vesta compositional properties

Details VMT, the DAWN/VIR Mineralogy Tool to retrieve Vesta compositional properties VMT, the DAWN/VIR Mineralogy Tool to retrieve Vesta compositional properties

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..939f&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.939

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Scientific paper

VIR-MS, the VIS and IR Mapping Spectrometer [1] aboard Dawn mission [2], has started the exploration of 4 Vesta in may 2011. The instrument generates hyperspectral cubes in which spatial (up to 256 samples of 250 μrad each) and spectral (864 bands spanning the 0.25-5 μm range) data are combined together. Since the amount of available information for each pixel is very large, for a mineralogical interpretation of the results it becomes necessary to reduce the data space by adopting some derived spectral quantities able to identify the most significant compositional units. For this reason we have realized VMT, the VIR Mineralogy Tool, an automatic data processor, able to return different spectral indicators (continuum levels, absorption bands properties, spectral slopes and their mutual correlations) from Vesta's observations and to compare these results with references retrieved from laboratory measurements and ground-based observations of HED meteorites. This tool shall allow us to map the spatial distribution of each spectral indicator and corresponding mineralogical composition across Vesta's surface.

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