The halo-to-disk mass ratio in late-type galaxies |
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| Authors: | A V Khoperskov |
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| Institution: | (1) Sternberg Astronomical Institute, Universitetskii pr. 13, Moscow, 119992, Russia |
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| Abstract: | Dynamical modeling of stellar disks without bulges is used to derive the dependence of the central stellar radial-velocity dispersion on the dark-halo mass. A sample of late-type galaxies with known central stellar velocity dispersions and maximum gas rotation velocities was drawn from the LEDA database. The sample-averaged ratio of the halo mass within four radial disk scale lengths to the disk mass is 80%. Objects whose halo mass can be a factor of 2 or more larger than the disk mass were identified. |
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| Keywords: | late-type galaxies dynamical modeling halo mass |
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