The Planes of Satellite Galaxies Problem, Suggested Solutions, and Open Questions

  title={The Planes of Satellite Galaxies Problem, Suggested Solutions, and Open Questions},
  author={Marcel S. Pawlowski},
  journal={arXiv: Astrophysics of Galaxies},
  • M. Pawlowski
  • Published 7 February 2018
  • Physics
  • arXiv: Astrophysics of Galaxies
Satellite galaxies of the Milky Way and of the Andromeda galaxy have been found to preferentially align in significantly flattened planes of satellite galaxies, and available velocity measurements are indicative of a preference of satellites in those structures to co-orbit. There is increasing evidence that such kinematically correlated satellite planes are also present around more distant hosts. Detailed comparisons show that similarly anisotropic phase-space distributions of sub-halos are… 

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