THE M31 VELOCITY VECTOR. III. FUTURE MILKY WAY M31–M33 ORBITAL EVOLUTION, MERGING, AND FATE OF THE SUN

@article{vanderMarel2012THEMV,
  title={THE M31 VELOCITY VECTOR. III. FUTURE MILKY WAY M31–M33 ORBITAL EVOLUTION, MERGING, AND FATE OF THE SUN},
  author={Roeland P. van der Marel and Gurtina Besla and Thomas J. Cox and Sangmo Tony Sohn and Jay Anderson},
  journal={The Astrophysical Journal},
  year={2012},
  volume={753}
}
We study the future orbital evolution and merging of the Milky Way (MW)–M31–M33 system, using a combination of collisionless N-body simulations and semi-analytic orbit integrations. Monte Carlo simulations are used to explore the consequences of varying all relevant initial phase-space and mass parameters within their observational uncertainties. The observed M31 transverse velocity from Papers I and II implies that the MW and M31 will merge t = 5.86+1.61−0.72 Gyr from now. The first pericenter… 
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