A Multiple Encounter Model of M51

  title={A Multiple Encounter Model of M51},
  author={Heikki Salo and Eija Laurikainen},
  journal={Astrophysics and Space Science},
The interaction of M51 with its companion NGC 5195 has been investigated with a spherical-polar grid code, where both components are described by self-gravitating star+gas disks embedded in analytical halo potentials. An extended survey was performed with various encounter geometries and companion masses, for relative orbits constrained by the components’ observed separation and velocity difference. As analytical halos were used, these models describe only the current orbit. These calculations… Expand
2 Citations
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