The 1.95–2.50 μm Spectrum of J6 Himalia

✍ Scribed by Thomas R. Geballe; C.M.Dalle Ore; Dale P. Cruikshank; T.C. Owen

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 84 KB
• Volume: 159
• Category: Article
• ISSN: 0019-1035
• DOI: 10.1006/icar.2002.6941

✦ Synopsis

The reflectance spectrum of Jupiter's sixth satellite, Himalia, is featureless in the wavelength region 1.95-2.50 µm as seen at a spectral resolution of 0.005 µm, with no absorptions deeper than a few percent. From model calculations we establish an upper limit of 10% by weight of H 2 O (30-µm grains) mixed intimately in the soil of Himalia, or alternatively 0.3% of the surface covered by exposures of H 2 O ice spatially segregated from the darker soil. For CH 4 and CO 2 ices the upper limits in spatially segregated models are both 0.3%.