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Dark matter in the outer solar systemThere are now a large number of small bodies in the outer solar system that are known to be covered with dark material. Attempts to identify that material have been thwarted by the absence of discrete absorption features in the reflection spectra of these planetesimals. An absorption at 2.2 micrometers that appeared to be present in several objects has not been confirmed by new observations. Three absorptions in the spectrum of the unusually red planetesimal 5145 Pholus are well-established, but their identity remains a mystery.
Document ID
19950057613
Document Type
Reprint (Version printed in journal)
Authors
Owen, T. (University of Hawaii, Honolulu, Hawaii US, United States)
Cruikshank, D. (NASA Ames Research Center Moffett Field, California, US, United States)
De Bergh, C. (Observatoire de Paris Meudon Cedex, France)
Geballe, T. (Joint Astonomy Centre Hilo, Hawaii, US, United States)
Date Acquired
August 16, 2013
Publication Date
July 11, 1994
Publication Information
Publication: Advances in Space Research
Volume: 16
Issue: 2
ISSN: 0273-1177
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAGW-2650
Distribution Limits
Public
Copyright
Other

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