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Optical Properties of Interplanetary Dust in the Tangential Plane

Published online by Cambridge University Press:  12 April 2016

J.B. Renard ,
A.C. Levasseur-Regourd  and
R. Dumont
J.B. Renard
Affiliation:
Université PARIS 61 Service d’Aéronomie - BP 3 91371 Verrières le Buisson, France
A.C. Levasseur-Regourd
Affiliation:
Université PARIS 61 Service d’Aéronomie - BP 3 91371 Verrières le Buisson, France
R. Dumont
Affiliation:
Observatoire de Bordeaux 33270 Floirac, France

Abstract

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Local intensity and emissivity, and consequently local polarization degree, temperature and albedo, can be retrieved from optical and thermal observations of zodiacal light. The local polarization degree (normalized at constant solar distance and phase angle) is found to decrease with elevation above the symmetry plane of the zodiacal cloud. The heterogeneity of the cloud, established towards the symmetry pole, is here demonstrated in the tangential plane (almost perpendicular to the ecliptic plane at 1 AU). We present a map of the local polarization degree in this plane.

Type
Interplanetary Dust: Zodiacal Light and Optical Studies
Information
International Astronomical Union Colloquium , Volume 126: Origin and Evolution of Interplanetary Dust , 1991 , pp. 199 - 202
Copyright
Copyright © Kluwer 1991

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