Stability of a Galactic Disk with a Rotation Law Specified by an External Field

Details Stability of a Galactic Disk with a Rotation Law Specified by an External Field Stability of a Galactic Disk with a Rotation Law Specified by an External Field

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap.....47..124a&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 47, Issue 1, p. 124-133 (2004).

Astronomy and Astrophysics

Astrophysics

Galactic Disk - Dynamical And Secular Instability - Gaseous And Dust Components

Scientific paper

The stability of a galactic disk in the gravitational field of a massive body is studied. The mutual friction of the gaseous and dust components is taken into account. Criteria for dynamical and secular instability are found. Asymptotic expressions are obtained for the growth rates in the case of a low density of dust. The cosmogonic significance of these results is discussed.

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