Kinematics and morphology of warped disk galaxies

Details Kinematics and morphology of warped disk galaxies Kinematics and morphology of warped disk galaxies

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004bdmh.confe.109j&link_type=abstract

"Proceedings of "Baryons in Dark Matter Halos". Novigrad, Croatia, 5-9 Oct 2004. Editors: R. Dettmar, U. Klein, P. Salucci. Publ

Computer Science

Scientific paper

Theories that explain warps in disks of galaxies usually make an interaction with their environment responsible for their appearance. According to a large number of these theories, the formation of a warp is caused by a misalignment of a triaxial dark matter halo with the disk. This misalignment is maintained or frequently excited by cosmic infall or gravitational interaction with companions. Such a misalignment should cause measurable signatures in the kinematics of the disk material, which are expected to be largest for extreme warps. We present deep HI synthesis observations and complementary photometric observations of five disk galaxies, three of which show extreme warps. We discuss the first results of a tilted-ring analysis of the galaxies’ gaseous disks

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