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Start Over Creator Giese, R. H.

1. Distribution of interplanetary dust

Creator:
Giese, R. H. and Kneißel , B.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
observations and interplanetary dust
Language:
Czech
Description:
Simple 3D distributions of the interplanetary dust cloud deríved from observations in the visible and distributions suggested by IR investigators are compared. Predictions of visual brightness based on IR models are falrly compatible with observations for large (ε<70°) elongations but not close to the Sun. Some reasons for this behaviour and first steps towards more realistic models are díscussed.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2. The dynamics of the zodiacal dust cloud on account of optical and infrared observations

Creator:
Kneißel, B. and Giese, R. H.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
optical and infrared observations, zodiacal dust cloud, and collisions
Language:
Czech
Description:
The method to determine the inclination distribution of zodiacal particle orbits according to 3D-density models of zodiacal dust presented by Giese and Kneißel (1987, this volume) is briefly discussed. The results show that models with additional bulges at the solar poles bear an isotropic component of the inclination distribution amounting up to 20% of all orbits, whereas infrared models show almost no isotropic component. The existence of an isotropic component for zodiacal dust orbits is questioned by comparison with the orbital elements of meteoroidal particles which serve as a source for the zodiacal dust by mutual collisions
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public