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8- to 13-micron spectrophotometry of Comet IRAS-Araki-AlcockSpectrophotometry between 8.0 and 13.0 microns at 2 percent spectral resolution is presented for areas in and near the nuclear condensation of Comet IRAS-Araki-Alcock (1983d) on May 11 and 12, 1983. All the spectra can be fit very well by blackbody curves, and no 10-micron silicate emissions are seen. The temperature structure of the coma suggests the presence of small (radii less than 5 microns) dust particles within 150 km of the nucleus and larger ones further out. The change in the spatial distribution of the infrared flux between the two nights suggests that an outburst may have occurred sometime on May 11.
Document ID
19850038227
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Feierberg, M. A.
(NASA Ames Research Center Moffett Field, CA, United States)
Witteborn, F. C.
(NASA Ames Research Center Space Science Div., Moffett Field, CA, United States)
Johnson, J. R.
(E- Systems, Inc. Garland Div., Dallas, TX, United States)
Campins, H.
(Maryland, University College Park, MD, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1984
Publication Information
Publication: Icarus
Volume: 60
ISSN: 0019-1035
Subject Category
Astronomy
Accession Number
85A20378
Distribution Limits
Public
Copyright
Other

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