Near-IR Spectral Datacube Mosaics of Io taken with Osiris in 2006

Details Near-IR Spectral Datacube Mosaics of Io taken with Osiris in 2006 Near-IR Spectral Datacube Mosaics of Io taken with Osiris in 2006

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.6402l&link_type=abstract

American Astronomical Society, DPS meeting #38, #64.02; Bulletin of the American Astronomical Society, Vol. 38, p.612

Physics

Optics

1

Scientific paper

We report adaptive optics observations of Io from 17th April and 1st, 2nd of June 2006 (UT), taken using the near-infrared imaging spectrometer, OSIRIS, on the 10m W.M. Keck II telescope. We obtained z(980-1199nm), J(1180-1440nm), H(1473-1803nm), K(1965-2381nm) broadband spectral cube mosaics of Io's entire disk with a 0.02” plate-scale and multiple K broadband cubes using the 0.05” plate-scale. On the 17th April and 2nd of June we observed a bright outburst in Io's northern hemisphere, which we provisionally attribute to the Tvashtar Catena. The eruption flux was strongest in the K band and initial analysis of the broadband J, H and K band spectra imply a temperature of 1150-1250K.
Current analysis involves a multi-temperature blackbody fit and photometric flux calibration to estimate the area covered by the eruption.
This research is supported by NSF grant AST-0406275 and via CfAO's cooperative agreement AST-9876783.

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