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Zodiacal emission. III - Dust near the asteroid beltProperties of the zodiacal dust bands are derived from fits to Infrared Astronomical Satellite profiles of the ecliptic. Three observations lead to the conclusion that the dust-band material is spread over a range of heliocentric distances between the asteroid belt and the sun: parallax, color temperature, and wavelength dependence of the band latitudes. The orientations of the midplanes of the bands are found to be typical of asteroids. A model of 'migrating bands', wherein dust is produced near the asteroid belt and spirals into the sun under the influence of Poynting-Robertson drag, is used to explain the range of heliocentric distances of dust-band material.
Document ID
19920059807
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Reach, William T. (California, University, Berkeley; NASA, Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
June 10, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 392
Issue: 1 Ju
ISSN: 0004-637X
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NSF AST-88-18544
Distribution Limits
Public
Copyright
Other