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

@article{Marel2012THEMV,
  title={THE M31 VELOCITY VECTOR. III. FUTURE MILKY WAY M31–M33 ORBITAL EVOLUTION, MERGING, AND FATE OF THE SUN},
  author={R. Marel and G. Besla and T. J. Cox and S. Sohn and J. A. STScI and U. Columbia and C. Observatories},
  journal={The Astrophysical Journal},
  year={2012},
  volume={753},
  pages={9}
}
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… Expand
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References

SHOWING 1-10 OF 22 REFERENCES
M31 Transverse Velocity and Local Group Mass from Satellite Kinematics
We present several different statistical methods to determine the transverse velocity vector of M31. The underlying assumptions are that the M31 satellites on average follow the motion of M31 throughExpand
Constraints on the Proper Motion of the Andromeda Galaxy Based on the Survival of Its Satellite M33 Through the Dynamics of the Local Group
A major uncertainty in the dynamical history of the Local Group of galaxies originates from the unknown transverse speed of the Andromeda galaxy (M31) relative to the Milky Way. We show that theExpand
Revisiting the Role of M31 in the Dynamical History of the Magellanic Clouds
We study the dynamics of the Magellanic Clouds in a model for the Local Group whose mass is constrained using the timing argument/two-body limit of the action principle. The goal is to evaluate theExpand
H I KINEMATICS AND DYNAMICS OF MESSIER 31
We present a new deep 21 cm survey of the Andromeda galaxy, based on high-resolution observations performed with the Synthesis Telescope and the 26 m antenna at the Dominion Radio AstrophysicalExpand
ARE THE MAGELLANIC CLOUDS ON THEIR FIRST PASSAGE ABOUT THE MILKY WAY
Recent proper-motion measurements of the Large and Small Magellanic Clouds (LMC and SMC, respectively) by Kallivayalil and coworkers suggest that the 3D velocities of the Clouds are substantiallyExpand
ΛCDM-based Models for the Milky Way and M31. I. Dynamical Models
We apply standard disk formation theory with adiabatic contraction within cuspy halo models predicted by the standard cold dark matter (?CDM) cosmology. The resulting models are confronted with theExpand
Bar Imprints on the Inner Gas Kinematics of M33
We present measurements of the stellar and gaseous velocities in the central 5' of the Local Group spiral M33. The data were obtained with the ARC 3.5 m telescope. Blue and red spectra withExpand
The M-σ and M-L Relations in Galactic Bulges, and Determinations of Their Intrinsic Scatter
We derive improved versions of the relations between supermassive black hole mass (M BH) and host-galaxy bulge velocity dispersion (σ) and luminosity (L; the M-σ and M-L relations), based on 49 M BHExpand
A Dynamical Model of the Local Group
This dynamical model for the 28 galaxies with distances less than 1.5 Mpc, and not apparently tight satellites, is constrained by the initial condition that peculiar velocities at high redshift areExpand
DARK MATTER HALOS IN THE STANDARD COSMOLOGICAL MODEL: RESULTS FROM THE BOLSHOI SIMULATION
Lambda Cold Dark Matter (?CDM) is now the standard theory of structure formation in the universe. We present the first results from the new Bolshoi dissipationless cosmological ?CDM simulation thatExpand
...
1
2
3
...