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The nature of C-class asteroids from 3-micron spectrophotometryNarrowband spectrophotometry between 2.3 and 3.5 micrometers is presented for 14 main-belt C asteroids greater than 100 km in diameter. Absorption features at 3 micrometers due to water of hydration are present in the spectra of nine of the asteroids, with intensities ranging from 6 to 23 percent. The other five asteroids have no such absorption greater than 2 percent in intensity. The present C-asteroid population may be fragments of larger parent bodies with anhydrous C3-like cores and hydrated C1I- or C2M-like mantles.
Document ID
19860025425
Document Type
Reprint (Version printed in journal)
Authors
Feierberg, M. A. (NASA Ames Research Center Moffett Field, CA, United States)
Lebofsky, L. A. (Arizona, University Tucson, United States)
Tholen, D. J. (Hawaii, University Honolulu, United States)
Date Acquired
August 12, 2013
Publication Date
August 1, 1985
Publication Information
Publication: Icarus
Volume: 63
ISSN: 0019-1035
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NSG-7114
Distribution Limits
Public
Copyright
Other