Are Galactic Warps Induced by Intergalactic Flows?

Details Are Galactic Warps Induced by Intergalactic Flows? Are Galactic Warps Induced by Intergalactic Flows?

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jkas...37..205s&link_type=abstract

Journal of the Korean Astronomical Society, vol. 37, no. 4, pp. 205-210

Astronomy and Astrophysics

Astronomy

4

Galaxies: Intergalactic Medium, Galaxies: Kinematics And Dynamics, Galaxies: Structure

Scientific paper

The interaction of disk galaxies with intergalactic winds has been invoked as a possible mechanism of the generation of galactic warps. Here we discuss conditions under which intergalactic flows can be relevant for warping field galaxies. Constraints include the heating of the outer disk, the level of asymmetry in the vertical distribution of the volume gas density, the angular frequency of the warp, the symmetry of galactic warps amplitude between the approaching and receding sides of the galaxy, and the speed of the intergalactic flow whether subsonic or supersonic. These constraints are discussed in this paper in reference to the proposal of López-Corredoira et al. that warps can be a natural consequence of accretion flows onto the disk.

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