Modeling the Kinematics of Distant Galaxies
  Evolution of galaxies is one of the most actual topics in astrophysics. Among
the most important factors determining the evolution are two galactic
components which are difficult or even impossible to detect optically: the
gaseous disks and the dark matter halo. We use deep Hubble Space Telescope
images to construct a two-component (bulge + disk) model for stellar matter
distribution of galaxies. Properties of the galactic components are derived
using a three-dimensional galaxy modeling software, which also estimates disk
thickness and inclination angle. We add a gas disk and a dark matter halo and
use hydrodynamical equations to calculate gas rotation and dispersion profiles
in the resultant gravitational potential. We compare the kinematic profiles
with the Team Keck Redshift Survey observations. In this pilot study, two
galaxies are analyzed deriving parameters for their stellar components; both
galaxies are found to be disk-dominated. Using the kinematical model, the gas
mass and stellar mass ratio in the disk are estimated.
