Kinematical and Chemical Vertical Structure of the Galactic Thick Disk. II. A Lack of Dark Matter in the Solar Neighborhood

@article{Bidin2012KinematicalAC,
  title={Kinematical and Chemical Vertical Structure of the Galactic Thick Disk. II. A Lack of Dark Matter in the Solar Neighborhood},
  author={Christian Moni Bidin and Giovanni Carraro and Rene A. Mendez and Rachel Smith},
  journal={The Astrophysical Journal},
  year={2012},
  volume={751},
  pages={30}
}
We estimated the dynamical surface mass density Σ at the solar position between Z = 1.5 and 4 kpc from the Galactic plane, as inferred from the kinematics of thick disk stars. The formulation is exact within the limit of validity of a few basic assumptions. The resulting trend of Σ(Z) matches the expectations of visible mass alone, and no dark component is required to account for the observations. We extrapolate a dark matter (DM) density in the solar neighborhood of 0 ± 1 mM ☉ pc–3, and all… Expand
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