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On the Goodness of Different Mass Estimators from N-body Simulations

  • J Perea (a1), A. del Olmo (a1) and M. Moles (a1)

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N-body models were run in order to test the mass estimators considered by Heisler, Tremaine and Bahcall (1985, HTB), when systems with a large number of mass-points with a non-flat mass-spectrum are considered. The initial conditions of the models were a analytic King profile for the number density, a Gaussian velocity distribution function and a Schechter-type mass spectrum. The models were left to evolve from a far from virial initial configuration, so a violent collapse occurs before the system reachs equilibrium. The code we use was NBODY2 code kindly provided to us by Dr. S. Aarseth.

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References

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Heisler, J., Tremaine, S. and Bahcall, J.: 1985, Ap. J. 298, p. 8.
Kent, S.M., Gunn, J.E.: 1982, Astron. J., 87, p. 945.

On the Goodness of Different Mass Estimators from N-body Simulations

  • J Perea (a1), A. del Olmo (a1) and M. Moles (a1)

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