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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Translated from Pis'ma v Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 28, No. 10, 2002, pp. 723–727.
Original Russian Text Copyright © 2002 by Khoperskov.
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Khoperskov, A.V. The halo-to-disk mass ratio in late-type galaxies. Astron. Lett. 28, 651–655 (2002). https://doi.org/10.1134/1.1512221
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DOI: https://doi.org/10.1134/1.1512221