Spectral evidence for a carbonaceous chondrite surface composition on Deimos

Details Spectral evidence for a carbonaceous chondrite surface composition on Deimos Spectral evidence for a carbonaceous chondrite surface composition on Deimos

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.283..277p&link_type=abstract

Nature, vol. 283, Jan. 17, 1980, p. 277, 278. NASA-supported research.

Computer Science

3

Carbonaceous Chondrites, Deimos, Phobos, Planetary Surfaces, Spectral Reflectance, Albedo, Ceres Asteroid, Natural Satellites, Optical Reflection, Spectrum Analysis, Viking Mars Program, Mars, Satellites, Deimos, Surface, Composition, Spectrum, Origin, Carbonaceous Chondrites, Reflectivity, Phobos, Ceres Asteroid, Mass, Asteroids, Comparisons, Albedo, Density, Analysis, Viking Orbiter, Mariner 9, Spectrometry, Imaging, Viking Lander, Polarimetry, Colorimetry, Ultraviolet, Wavelengths, Geometry

Scientific paper

The surface compositions of Phobos and Deimos as determined by their UV-visible reflectance are compared in order to evaluate the hypothesis that the different surface morphologies of the two satellites are due to different mechanical properties. The UV-visible reflectance spectrum of Deimos is compiled from Mariner 9 UV spectrometry and Canopus star tracker photometry and ground-based colorimetry and polarimetry; the geometric albedo of Deimos is determined from Mariner 9 Canopus star tracker data. The reflectance spectra of Deimos and Phobos are found to be similar in a first approximation, exhibiting low, flat reflectivities in the visible and dropping off sharply in the UV, compatible with a probable carbonaceous chondrite nature for Deimos as well as Phobos and suggesting that their different surface morphologies are most likely due to different orbital histories.

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