A Hubble Space Telescope Study of Posteclipse Brightening and Albedo Changes on Io
✍ Scribed by James J. Secosky; Michael Potter
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 444 KB
- Volume
- 111
- Category
- Article
- ISSN
- 0019-1035
No coin nor oath required. For personal study only.
✦ Synopsis
Images of Io taken by the Hubble Space Telescope Planetary Camera using filters at 7120 and (3577 \AA) in April and May 1992 shortly after Io emerged from Jupiter's shadow have been analyzed for the effect of posteclipse brightening first reported by Binder and Cruikshank (1964, Icarus 3, 299-305). The classic effect displays a (10 %) increase in brightening lasting for 10 to (15 \mathrm{~min}). This was not seen in any of the eclipses that were studied.
A comparison of the (3577-\AA) images with UV maps produced from images taken with Voyager 1 (McEwen 1988, Icarus 73, 385-426) showed little change in 13 years. The striking, detailed similarity of the two demonstrate that the Hubble Space Telescope Planetary Camera has the capability to monitor temporal changes on Io's surface. 1994 Academic Press, Inc.