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1.1.4 Pioneer 10 Observations of Zodiacal Light Brightness near the Ecliptic: Changes with Heliocentric Distance

Published online by Cambridge University Press:  12 April 2016

M. S. Hanner ,
J. G. Sparrow ,
J. L. Weinberg  and
D. E. Beeson
M. S. Hanner
Affiliation:
Space Astronomy Laboratory, State University of New York at Albany
J. G. Sparrow
Affiliation:
Space Astronomy Laboratory, State University of New York at Albany
J. L. Weinberg
Affiliation:
Space Astronomy Laboratory, State University of New York at Albany
D. E. Beeson
Affiliation:
Space Astronomy Laboratory, State University of New York at Albany

Abstract

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Sky maps made by the Pioneer 10 Imaging Photopolarimeter (IPP) at sun-spacecraft distances from 1 to 3 AU have been analyzed to derive the brightness of the zodiacal light near the ecliptic at elongations greater than 90 degrees. The change in zodiacal light brightness with heliocentric distance is compared with models of the spatial distribution of the dust. Use of background starlight brightnesses derived from IPP measurements beyond the asteroid belt, where the zodiacal light is not detected, and, especially, use of a corrected calibration lead to considerably lower values for zodiacal light than those reported by us previously.

Type
1 Zodiacal Light
Information
International Astronomical Union Colloquium , Volume 31: Interplanetary Dust and Zodiacal Light , 1976 , pp. 29 - 35
Copyright
Copyright © Springer-Verlag 1976

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