A new model for the Milky Way bar

  title={A new model for the Milky Way bar},
  author={Yougang Wang and Hongsheng Zhao and Shude Mao and Robert Michael Rich},
  journal={Monthly Notices of the Royal Astronomical Society},
We use Schwarzschild's orbit-superposition technique to construct self-consistent models of the Galactic bar. Using χ2 minimization, we find that the best-fitting Galactic bar model has a pattern speed Ωp = 60 km s−1 kpc−1, disc mass Md = 1.0 × 1011 M⊙ and bar angle θbar = 20° for an adopted bar mass Mbar = 2 × 1010 M⊙. The model can reproduce not only the three-dimensional and projected density distributions but also velocity and velocity dispersion data from the Bulge Radial Velocity Assay… Expand
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