An eccentric disk model for the nucleus of M31

@article{Tremaine1995AnED,
  title={An eccentric disk model for the nucleus of M31},
  author={S. Tremaine},
  journal={The Astronomical Journal},
  year={1995},
  volume={110},
  pages={628}
}
  • S. Tremaine
  • Published 1995
  • Physics
  • The Astronomical Journal
The nucleus of M31 may be a thick eccentric disk, composed of stars traveling on nearly Keplerian orbits around a black hole or other dark compact object. This hypothesis reproduces most of the features seen in HST photometry of the center of M31; in particular the bright off-center source P1 is the apoapsis of the disk. An eccentric disk can also explain the rotation curve and asymmetric dispersion profile revealed by ground-based observations. The central object must be smaller than 1 pc so… Expand

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