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IRAS* Observations of the Interplanetary Dust Emission

Published online by Cambridge University Press:  12 April 2016

M.G. Hauser ,
T.N. Gautier ,
J. Good  and
F.J. Low
M.G. Hauser
Affiliation:
Goddard Space Flight Center Greenbelt, Maryland 20771
T.N. Gautier
Affiliation:
Jet Propulsion Laboratory Pasadena, California 91011
J. Good
Affiliation:
Jet Propulsion Laboratory Pasadena, California 91011
F.J. Low
Affiliation:
University of Arizona, Tucson, Arizona 85721

Abstract

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The Infrared Astronomical Satellite (IRAS) has completed a sensitive, highly redundant survey of the full sky in four broad photometric bands at 12, 25, 60, and 100 micrometers wavelength. The survey measured interplanetary dust emission over elongation angles ranging from 60 to 120 degrees. Bright emission from the main cloud is consistent with optically thin blackbody emission. The grains are evidently quite black, with an “apparent albedo” of about 0.07. The data show clear evidence for deviation of the dust symmetry surface from the ecliptic plane. Surprising bands of emission were discovered near the ecliptic plane and about ten degrees on either side of it. The heliocentric distance of this material, suggested to be asteroidal in origin, is inferred to be about 2.5 AU from both color temperature and parallax measurements.

Type
I. Zodiacal Light and F-Corona: Observations
Information
International Astronomical Union Colloquium , Volume 85: Properties and Interactions of Interplanetary Dust , 1985 , pp. 43 - 48
Copyright
Copyright © Reidel 1985

Footnotes

*

The Infrared Astronomical Satellite (IRAS) was developed and operated by the Netherlands Agency for Aerospace Programs (NIVR), the United States National Aeronautics and Space Administration (NASA), and the United Kingdom Science and Engineering Research Council (SERC).

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