Computer Science – Numerical Analysis
Scientific paper
Oct 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...433..479b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 433, no. 2, p. 479-493
Computer Science
Numerical Analysis
39
Astrodynamics, Astronomical Models, Computerized Simulation, Dark Matter, Galactic Clusters, Galactic Evolution, Gravitation, Intergalactic Media, Many Body Problem, Density Distribution, Interacting Galaxies, Mass Distribution, Numerical Analysis
Scientific paper
We report N-body simulations of the dynamical evolution of isolated clusters of 50 galaxies containing a dark matter component that comprises 90% of the cluster mass. For our adopted physical scaling, the line-of-sight velocity dispersion of the cluster is 310 km/s and the initial core radius is 250 kpc. Our results are applicable to (1) present-day poor clusters, (2) the small systems that may have merged to produce present-day rich clusters, and (3) virialized subclumps within larger systems, in between major substructure merger events. We have evolved a total of 10 cluster models, using N = 40,000 particles per model. The models are fully self-consistent in that each galaxy is represented as an extended structure containing many particles and the gravitational potential arises from the particles alone. Dark matter is apportioned between the galaxy halos and a smoothly distributed common group halo, the intracluster background (ICB). The percentage of cluster mass initially in the ICB, Beta, is chosen to be 50, 75, or 90. Increasing Beta has the effect of removing mass from dark halos around galaxies and distributing it throughout the cluster. The initial conditions were constructed by randomly sampling a King distribution with W0 = 6. The galaxies are also King models; the masses of the galaxies follow a Schechter distribution function.
Berrington Robert Charles
Bode Paul W.
Cohn Haldan N.
Lugger Phyllis Minnie
No associations
LandOfFree
The dynamical evolution of poor clusters of galaxies: Growth and properties of the first-ranked galaxy 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 The dynamical evolution of poor clusters of galaxies: Growth and properties of the first-ranked galaxy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The dynamical evolution of poor clusters of galaxies: Growth and properties of the first-ranked galaxy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1070271