Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-04-20
in Clarke D.A., West M.J., eds., Proc. 12th `Kingston meeting' on Theoretical Astrophysics: Computational Astrophysics, ASP Co
Astronomy and Astrophysics
Astrophysics
6 pages, 2 figures, contribution to the 12th `Kingston meeting' on Theoretical Astrophysics (1996)
Scientific paper
We present a method of including galaxy formation in dissipationless N-body simulations. Galaxies that form during the evolution are identified at several epochs and replaced by single massive soft particles. This allows one to produce two-component models containing galaxies and a background dark matter distribution. We applied this technique to obtain two sets of models: one for field galaxies and one for galaxy clusters. We tested the method for the standard CDM scenario for structure formation in the universe. A direct comparison of the simulated galaxy distribution to the observed one sets the amplitude of the initial density fluctuation spectrum, and thus the present time in the simulations. The rates of formation and merging compare very well to simulations that include hydrodynamics, and are compatible with observations. We also discuss the cluster luminosity function.
No associations
LandOfFree
Galaxy formation in dissipationless N-body models does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Galaxy formation in dissipationless N-body models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galaxy formation in dissipationless N-body models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-70152