Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apjs...74....1z&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 74, Sept. 1990, p. 1-36. Research supported by the Smithsonian In
Astronomy and Astrophysics
Astrophysics
259
Cosmology, Galactic Clusters, Kinematics, Dark Matter, Monte Carlo Method, Red Shift, Velocity Distribution
Scientific paper
Velocity histograms, galaxy positions, and velocity dispersions are presented for 69 nearby Abell clusters. The shape of the cumulative distribution for R = 1 or more clusters does not match the predictions of standard CDM models for any biasing parameter b. The only models consistent with the median and maximum dispersions of the sample are those of b about 1.6-2.0 and in which clusters are identified in three dimensions. Velocity dispersions of high-redshift systems appear fundamentally different from those of nearby clusters. The median dispersion of the subset of 25 cD clusters is similar to that of non-cD systems. A substantial fraction of the cD galaxies have velocities significantly different from the mean of their parent clusters. Three of these have 4 s or more measured redshifts. These last two results suggest that the formation of cD galaxies is dominated by the local, rather than global, cluster environment.
Geller Margaret J.
Huchra John P.
Zabludoff Ann I.
No associations
LandOfFree
The kinematics of Abell clusters 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 kinematics of Abell clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The kinematics of Abell clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1401437