Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975acasn..16...27h&link_type=abstract
Acta Astronomica Sinica, vol. 16, June 1975, p. 27-36. In Chinese, with abstract in English.
Astronomy and Astrophysics
Astronomy
Interstellar Gas, Spatial Distribution, Spiral Galaxies, Astronomical Models, Galactic Mass, Gas Dynamics, Gravitational Fields, Stellar Gravitation
Scientific paper
The three-dimensional structure of a large-scale interstellar gas subjected to the resultant gravitational field of stars and gas is discussed using the fundamental equations of gas dynamics. The galactic mass distribution and the kinetic characteristics of gas being given, an exact solution of the spatial distribution of interstellar gas is obtained, and the peak distribution of gas in disk-shaped galaxies is examined. The general features of galactic wing are analyzed by using a momentum integral, and the three-dimensional distribution of iso-pressure line of interstellar gas is calculated by using the Schmidt (1956) galactic model, and some possible tendencies of the galactic wing are pointed out. The origin of high-velocity characteristic gaseous clouds in the galactic wing is discussed.
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