NGC 1052-DF2 and modified gravity (MOG) without dark matter

@article{Moffat2018NGC1A,
  title={NGC 1052-DF2 and modified gravity (MOG) without dark matter},
  author={John W. Moffat and V. Toth},
  journal={Monthly Notices of the Royal Astronomical Society: Letters},
  year={2018}
}
  • J. Moffat, V. Toth
  • Published 3 May 2018
  • Physics, Geology
  • Monthly Notices of the Royal Astronomical Society: Letters
We model the velocity dispersion of the ultra-diffuse galaxy NGC 1052-DF2 using Newtonian gravity and modified gravity (MOG). The velocity dispersion predicted by MOG is higher than the Newtonian gravity prediction, but it is fully consistent with the observed velocity dispersion that is obtained from the motion of 10 globular clusters. 
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TLDR
The ultra-diffuse galaxy NGC1052–DF2 has a dynamical mass, determined by the motions of globular-cluster-like objects, that is essentially the same as the mass in stars, meaning that it does not have a dark matter component, and demonstrates that dark matter is not always coupled with baryonic matter on galactic scales.
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