Galactic dynamics in the light of meteorological theory |
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| Authors: | Victor P Starr |
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| Institution: | (1) Massachusetts Institute of Technology, Cambridge 39, Mass, (U.S.A.) |
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| Abstract: | Summary Equations for the motions in a galaxy which is controlled by gravitational forces and inertial effects are formulated. It is found that for the motions relative to the rotating system formulae analogous, and of similar form, to the geostrophic wind equations may be written. From these formulae and from the distribution of the relative gravitational potential in the disc of the galaxy, it is found that a spiral tendency in the mass distribution carries the implication of an inward flux of angular momentum by advective processes. This is to be compared with an outward flux through gravitational torques obtained in previous studies in which the writer participated. |
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