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ARE GALACTIC WARPS INDUCED BY INTERGALACTIC FLOWS?
F. J. SÁNCHEZ-SALCEDO 한국천문학회 2004 Journal of The Korean Astronomical Society Vol.37 No.5
The interaction of disk galaxies with intergalactic winds has been invoked as a possible mechanismof the generation of galactic warps. Here we discuss conditions under which intergalactic ows canbe relevant for warping eld galaxies. Constraints include the heating of the outer disk, the level ofasymmetry in the vertical distribution of the volume gas density, the angular frequency of the warp, thesymmetry of galactic warps amplitude between the approaching and receding sides of the galaxy, and thespeed of the intergalactic ow whether subsonic or supersonic. These constraints are discussed in thispaper in reference to the proposal of Lopez-Corredoira et al. that warps can be a natural consequenceof accretion ows onto the disk.