Abstract
Abstract Disk galaxies in a cluster of galaxies move in hot gas that fills the cluster. Generally, they move at transonic or supersonic velocities. If ram-pressure stripping is insufficient to destroy the gas disk, the galaxies should be affected by the wind of the surrounding hot gas, similar to an airfoil. In this paper, it is considered whether the aerodynamic interaction can be strong enough to force a disk galaxy to deviate from the orbit that it would have been in. It is shown that while the lift force is not effective, the drag force could affect face-on disk galaxies in poor clusters on a long time scale.
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