Dear IOPW-satellite members,


Here a report of  recent Keck AO observations of Io from Gibbard et al.


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<fontfamily><param>Lucida Grande</param><bigger>S. Gibbard, I. de
Pater, D. Le Mignant and F. Marchis report the detection of a bright
eruption in the vicinity of Tupann Patera. The observations were
obtained on 08 March 2003 (UT) with the Keck AO system at a wavelength
of 3.8 micron. Preliminary results suggest that the source is located
at 15.6+/-6.8S and137.1+/-5.4W, close to Tupann Patera. The brightness
is estimated to 18 GW/sr/micron (after applying a cos law correction
factor).  

Detection was successful in M-band (4.7 micron) and marginal in K-band
(2.2 micron), indicative of temperatures over 800 K.  

The data have not (yet) been deconvolved.  


In addition to Tupann, other fainter volcanic sources can be
distinguished on the image.  

 

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http://astron.berkeley.edu/~fmarchis/Science/Io/Io2003/

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Franck Marchis

IOPW-satellite discipline

</bigger></fontfamily><bigger>--- Franck Marchis
------------------------- Phone: +1 510 642 3958 --

    Postdoct/University of California           Fax: +1 510 642 3411 --

    601 Campbell Hall                   fmarchis@astron.berkeley.edu --

--- Berkeley CA 94720 - USA --http://astron.berkeley.edu/~fmarchis --

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