Other
Scientific paper
Jul 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997dps....29.0904g&link_type=abstract
American Astronomical Society, DPS meeting #29, #09.04; Bulletin of the American Astronomical Society, Vol. 29, p.978
Other
Scientific paper
We report results of IR measurements of occultations of Io by Europa made at the NASA IRTF and Palomar, observations that we use to map the thermal emission from Io's volcanos at high spatial resolution. The figure illustrates one result from lambda =8.7mu m photometry of the 4/18/97 UT occultation. The graph plots the combined flux from both satellites, normalized to the unocculted flux, versus UT with 4 times labelled. A bright hot spot containing ~ 50% of the total flux disappears behind Europa's limb between times 1 & 2 and reappears between times 3 & 4. The image shows a map of Io and the outline of Europa's limb at these 4 times based on the Galileo navigation ephemeris (courtesy W. Owen). The eruption lies within the region of overlap of the 4 limb projections, squarely centered on Loki Patera. The lightcurve shows that no other comparably bright hot spots were occulted. The data set we are analyzing includes 8.2-11.2mu m spectra of the 3/28/97 UT occultation acquired with SpectroCAM-10 on the Palomar 5-m. \epsfxsize=12cm \epsfbox{7350.eps}
Bergknut L.
Blaney Diana L.
Goguen Jay D.
Golisch William
Griep David
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