KINEMATICS OF THE STELLAR HALO AND THE MASS DISTRIBUTION OF THE MILKY WAY USING BLUE HORIZONTAL BRANCH STARS

@article{Kafle2012KINEMATICSOT,
  title={KINEMATICS OF THE STELLAR HALO AND THE MASS DISTRIBUTION OF THE MILKY WAY USING BLUE HORIZONTAL BRANCH STARS},
  author={P. Kafle and S. Sharma and G. Lewis and J. Bland-hawthorn},
  journal={The Astrophysical Journal},
  year={2012},
  volume={761},
  pages={98}
}
  • P. Kafle, S. Sharma, +1 author J. Bland-hawthorn
  • Published 2012
  • Physics
  • The Astrophysical Journal
  • Here we present a kinematic study of the Galactic halo out to a radius of ∼ 60 kpc, using 4664 blue horizontal branch (BHB) stars selected from the SDSS/SEGUE survey, to determine key dynamical properties. Using a maximum likelihood analysis, we determine the velocity dispersion profiles in spherical coordinates ( �r, ��, ��) and the anisotropy profile ( �). The radial velocity dispersion profile ( �r) is measured out to a galactocentric radius of r ∼ 60 kpc, but due to the lack of proper… CONTINUE READING
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