DPS Pasadena Meeting 2000, 23-27 October 2000
Session 43. Other Planetary Satellites Posters
Displayed, 1:00pm, Monday - 1:00pm, Friday, Highlighted Tuesday and Thursday, 3:30-6:30pm, C101-C105, C211

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[43.02] The Spectral Signature of Water Ice on Miranda

J. Bauer (UH, IfA), T. Owen (UH, IfA), K. J. Meech (UH, IfA), T. Geballe (Gemini 8-Meter Telescope Project), T. Roush (NASA Ames Research Center), W. Vacca, J. Rayner (UH, IfA)

UKIRT observations taken in June of 1999 reveal strong water ice signatures on Uranus' Miranda satellite. The spectra span a wavelength range of 1.0-2.5 \mu m, and confirm the existence of a 2.0 \mu m water feature previously detected on Miranda. They also show a strong second broad 1.65 \mu m crystalline water ice absorption feature and evidence for absorption from other trace constituents. We find the following preliminary values for Miranda's full disk albedos: Full Disk Albedos
\lambda (\mu m) albedo \sigma \lambda FWHM
1.25 0.237 0.018 0.16
1.62 0.185 0.004 0.28
1.72 0.206 0.005 0.10
2.20 0.165 0.005 0.40

The early results of spectral modeling will be shown, and we will discuss the implications of these data regarding Miranda's surface chemistry in the context of the formation of the outer solar system.

If you would like more information about this abstract, please follow the link to http://www.ifa.hawaii.edu/~bauer. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

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