The Galaxy “Missing Dark Matter” NGC 1052-DF4 is Undergoing Tidal Disruption

@article{Montes2020TheG,
  title={The Galaxy “Missing Dark Matter” NGC 1052-DF4 is Undergoing Tidal Disruption},
  author={Mireia Montes and Ra{\'u}l Infante-Sainz and A. Madrigal-Aguado and Javier Rom{\'a}n and Matteo Monelli and Alejandro S. Borlaff and Ignacio Trujillo},
  journal={The Astrophysical Journal},
  year={2020},
  volume={904}
}
The existence of long-lived galaxies lacking dark matter represents a challenge to our understanding of how galaxies form. Here, we present evidence that explains the lack of dark matter in one such galaxy: NGC 1052-DF4. Deep optical imaging of the system has detected tidal tails in this object caused by its interaction with its neighboring galaxy NGC 1035. As stars are more centrally concentrated than dark matter, tidal stripping will remove a significant percentage of dark matter before… 

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