High-Velocity Rotation in the Nuclei of Galaxies and Central Massive Cores

Details High-Velocity Rotation in the Nuclei of Galaxies and Central Massive Cores High-Velocity Rotation in the Nuclei of Galaxies and Central Massive Cores

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sgyu.conf..171s&link_type=abstract

Studies of Galaxies in the Young Universe with New Generation Telescope, Proceedings of Japan-German Seminar, held in Sendai, Ja

Computer Science

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Scientific paper

We present the results of our high-resolution (1-2") CO-line survey of the central regions of Virgo spirals using the Nobeyama mm-wave Array (NMA). By applying the newly-developed iterative method to position-veolcity diagrams, we derive most reliable rotation curves. The thus obtained rotation curves for several galaxies show very high-velocity rotation in the central 100 pc, indicating massive cores of the order of 109 Msun within 100 pc. We discus possibilities of dark matter cusp in the nuclei and multiple components of the dark matter distribution in galaxies. We comment about possible future CO-line works on high-z galaxies using ALMA on the basis of our extensive CO-line survey of low-z galaxies.

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