Spectral Units on the Icy Galilean Satellites from Voyager Imagery

Details Spectral Units on the Icy Galilean Satellites from Voyager Imagery Spectral Units on the Icy Galilean Satellites from Voyager Imagery

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.0420h&link_type=abstract

American Astronomical Society, DPS meeting #28, #04.20; Bulletin of the American Astronomical Society, Vol. 28, p.1074

Other

Scientific paper

We are performing new analyses of the visible Voyager imagery in order to more accurately define spectral units on the icy Galilean satellites in an attempt to provide the best context for the Galileo mission results. The Galileo imaging system and the NIMS, with a resolution of up to 1 km, are returning superior spectral imagery to Voyager but only for selected regions of the satellites. Therefore, the Voyager data remains an important source of information. We use revised Voyager spectral images, formatted in an image cube calculated by Granahan et al. [1] to produce improved mosaics of the icy satellites in a format similar to those of Nelson et al. [2]. However, these data are superior to those used in these and other earlier analyses [2,3] due to a better calibration and improved software which enable a more accurate smoothing of the boundaries between image frames reducing the chance of misconstruing irregularities in the photometric function correction for compositional differences. We are presenting displays of spectral units for Ganymede and Callisto with the color assignments indicative of the spectral nature of the unit. These satellites show consistent evidence of surface emplacement of materials of exogenic and endogenic origin. [1] Granahan, J.C., K.S. Polk, F.P. Fanale, and T.B. McCord (1996) Lunar Planet. Sci. XXVII (abstract), 443-444. [2] Nelson, M.L., T.B. McCord, R.N. Clark, T.V. Johnson, D.L. Matson, J.A. Mosher, and L.A. Soderblom (1986). Icarus 65, 129-151. [3] Johnson, R.E., M.L. Nelson, T.B. McCord, and J.C. Gradie (1988). Icarus 75, 423-436. Johnson, T.V., L.A. Soderblom, J.A. Mosher, G.E. Danielson, A. F. Cook, and P. Kupferman (1983).J. Geophys. Res. 88, 5789-5805. McEwen, A.S. (1986). J. Geophys. Res. 91, 8077-8097.

Affiliated with

Also associated with

No associations

Rating

Spectral Units on the Icy Galilean Satellites from Voyager Imagery does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spectral Units on the Icy Galilean Satellites from Voyager Imagery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral Units on the Icy Galilean Satellites from Voyager Imagery will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1460916