Dynamics of elliptical galaxies with planetary nebulae in modified Newtonian dynamics

@article{Tian2016DynamicsOE,
  title={Dynamics of elliptical galaxies with planetary nebulae in modified Newtonian dynamics},
  author={Yong Tian and C. Ko},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2016},
  volume={462},
  pages={1092-1100}
}
  • Yong Tian, C. Ko
  • Published 2016
  • Physics
  • Monthly Notices of the Royal Astronomical Society
The dynamics of an elliptical galaxy within a couple of effective radii can be probed effectively by stars. However, at larger distances planetary nebulae (PNe) replace stars as the tracer of the dynamics. Making use of the motion of PNe, Romanowsky et al. (2003) measured the dynamics of three luminous elliptical galaxies (NGC821, NGC3379, and NGC4494) at large distances from the galactic center. They found that little dark matter is needed up to 6 effective radii. Milgrom & Sanders (2003… Expand

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