3- to 13-micron spectra of Io

Details 3- to 13-micron spectra of Io 3- to 13-micron spectra of Io

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..104..337n&link_type=abstract

Icarus (ISSN 0019-1035), vol. 104, no. 2, p. 337-340.

Computer Science

2

Infrared Spectra, Io, Satellite Imagery, Volcanoes, Galilean Satellites, Least Squares Method, Voyager 1 Spacecraft, Voyager 2 Spacecraft

Scientific paper

The Broadband Array Spectrograph System with the NASA Infrared Telescope Facility was used to obtain 3- to 13-micron spectra of Io on June 14-16, 1991. The extinction correction and its error for each standard star (Alpha Boo, Alpha Lyr, and Mu UMa) were found individually by performing an unweighted linear fit of instrumental magnitude as a function of airmass. The model results indicate two significant trends: (1) modest differences between the two hemispheres at lower background temperatures and (2) a tendency to higher temperatures, smaller areas, and less power from the warm component at higher background temperatures with an increased contrast between the two hemispheres. The increased flux from 8 to 13 microns is due primarily to a greater area on the Loki (trailing) hemisphere for the warm component, although temperature also plays a role.

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