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

Published online by Cambridge University Press:  03 August 2017

J Perea ,
A. del Olmo  and
M. Moles
J Perea
Affiliation:
Instituto de Astrofísica de Andalucía, Apdo. 2144, 18080 Granada, Spain
A. del Olmo
Affiliation:
Instituto de Astrofísica de Andalucía, Apdo. 2144, 18080 Granada, Spain
M. Moles
Affiliation:
Instituto de Astrofísica de Andalucía, Apdo. 2144, 18080 Granada, Spain

Extract

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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.

Type
Appendix 1: Poster Papers
Information
Symposium - International Astronomical Union , Volume 130: Large Scale Structures of the Universe , 1988 , pp. 558
Copyright
Copyright © Reidel 1988 

References

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