A near-infrared spectrum of Neptune's satellite Nereid was obtained at the Keck Observatory on 1997 May 1. The spectrum shows two absorptions near 1.54 and 2.03 µm and is well matched by a synthetic spectrum of an intimate mix of low-temperature, particulate water ice and dark, bluecolored material.
Water Ice on Triton
✍ Scribed by Dale P. Cruikshank; Bernard Schmitt; Ted L. Roush; Tobias C. Owen; Eric Quirico; Thomas R. Geballe; Catherine de Bergh; Mary Jane Bartholomew; Cristina M. Dalle Ore; Sylvain Douté; Roland Meier
- Book ID
- 102568765
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 128 KB
- Volume
- 147
- Category
- Article
- ISSN
- 0019-1035
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✦ Synopsis
and special conditions in the surface microstructure may affect the spectroscopic signature of water ice in such a way that crystalline ice is present and its 1.65 µm spectral band is masked. Our spectra (1.87-2.5 µm) taken at an interval of nearly 3.5 years do not show any significant changes that might relate to reports of changes in Triton's spectral reflectance (B.
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