Test of the hypothesis of circular motion of interstellar clouds

Details Test of the hypothesis of circular motion of interstellar clouds Test of the hypothesis of circular motion of interstellar clouds

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ap.....43..176d&link_type=abstract

Astrophysics, Volume 43, Issue 2, pp.176-181

Astronomy and Astrophysics

Astrophysics

Scientific paper

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.

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