Frost spectra: Comparison with Jupiter's Satellites
Abstract
The near infrared spectral reflectance of pure CH 4, CO 2, H 2O, H 2S, NH 3 and NH 4SH frosts has been measured. Comparison with recent Galilean satellite spectra indicates that H 2O at approximately 150°K and with about 0.01 cm grain size is the major component on the surface of JII (Europa) and JIII (Ganymede); upper limits for the remaining frosts range from 5 to 28%. Materials other than these frosts must be present on the surface of JI (Io) and JIV (Callisto).
- Publication:
-
Icarus
- Pub Date:
- April 1974
- DOI:
- 10.1016/0019-1035(74)90153-5
- Bibcode:
- 1974Icar...21..506K