Publication Date:
1997-10-10
Description:
Five absorption features are reported at wavelengths of 3.4, 3.88, 4. 05, 4.25, and 4.57 micrometers in the surface materials of the Galilean satellites Callisto and Ganymede from analysis of reflectance spectra returned by the Galileo mission near-infrared mapping spectrometer. Candidate materials include CO2, organic materials (such as tholins containing C(triple bond)N and C-H), SO2, and compounds containing an SH-functional group; CO2, SO2, and perhaps cyanogen [(CN)2] may be present within the surface material itself as collections of a few molecules each. The spectra indicate that the primary surface constituents are water ice and hydrated minerals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCord, T B -- Carlson, R W -- Smythe, W D -- Hansen, G B -- Clark, R N -- Hibbitts, C A -- Fanale, F P -- Granahan, J C -- Segura, M -- Matson, D L -- Johnson, T V -- Martin, P D -- New York, N.Y. -- Science. 1997 Oct 10;278(5336):271-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Hawaii Institute of Geophysics and Planetology, University of Hawaii, Honolulu, HI 96822, USA. tom@kahana.pgd.hawaii.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9323203" target="_blank"〉PubMed〈/a〉
Keywords:
Carbon Dioxide/*analysis
;
Hydrocarbons/analysis
;
Ice
;
*Jupiter
;
Nitriles/*analysis
;
Spectrum Analysis
;
Sulfur/*analysis
;
Sulfur Dioxide/analysis
;
Water
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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