Test of the hypothesis of circular motion of interstellar clouds |
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| Authors: | R M Dzigvashvili G A Malasidze T G Mdzinarishvili |
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| Institution: | (1) Abastumani Astrophysical Observatory, Georgia |
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| Abstract: | The study of the motion of interstellar clouds by direct dynamical methods is hindered by the lack of a complete set of initial
conditions of the motion. The hypothesis of the circular motion of interstellar matter of various composition is tested on
the basis of the catalog of Brand and Blitz. A modification of the method proposed by Edmondson and Hoerner, which was successfully
used for a statistical investigation of the shapes of the orbits of globular clusters, is used. It is established that interstellar
clouds move in nearly circular orbits with small deviations, so that data on the spiral structure of the Galaxy obtained by
radio-astronomical methods should be considered as close to reality.
Translated from Astrofizika, Vol. 43, No. 2, pp. 239–246, April-June, 2000. |
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