Structure of the neutral-hydrogen subsystem in the Galaxy

Details Structure of the neutral-hydrogen subsystem in the Galaxy Structure of the neutral-hydrogen subsystem in the Galaxy

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13..474p&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, June 1987, p. 474-480. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

5

Density Distribution, Hydrogen Clouds, Milky Way Galaxy, Neutral Gases, Solar Neighborhood, Spatial Distribution, Astronomical Spectroscopy, Centimeter Waves, Galactic Nuclei, Spiral Galaxies

Scientific paper

The results of observations at 21 cm line in the Galaxy are interpreted under the assumption of concentration of hydrogen along a logarithmic spiral. It was shown earlier (Petrovskaya, 1986) that a two-armed spiral rather badly describes the H I distribution within the range of 10 kpc from the centre. Four different sets of the parameters were obtained for such a model. It is shown in this paper that this unambiguity may be overcome in a four-armed model, because in this case the unique set of the parameters is found.

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