Asteroid 4 Vesta as seen with the ISO Short Wavelength Spectrometer

Details Asteroid 4 Vesta as seen with the ISO Short Wavelength Spectrometer Asteroid 4 Vesta as seen with the ISO Short Wavelength Spectrometer

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aspc..196..205h&link_type=abstract

Thermal Emission Spectroscopy and Analysis of Dust, Disks, and Regoliths, Proceedings of a meeting held at at The Lunar and Plan

Astronomy and Astrophysics

Astronomy

3

Scientific paper

We present rotationally resolved spectroscopic observations of asteroid Vesta in the 19.4-27.6 μm wavelength range. Spectral features in the olivine and pyroxene silicate groups are tentatively identified across Vesta's surface, where olivines are seen to dominate in the eastern hemisphere and pyroxenes in the western hemisphere. The analysis of their iron content through the shifts in the peak wavelengths (Jäger et al. 1998), reveals that pyroxenes in the western hemisphere have the highest Fe/Mg ratios.

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