Journal article
Orientations, ellipticities and nearest-neighbor correlations in rich clusters of galaxies
Advances in space research, v 10(2), pp 13-15
1990
Abstract
Using the Einstein Observatory data base, we have analyzed X-ray images of rich clusters of galaxies to determine the ellipticity of the images. The basic premise behind this analysis is that if “top-down” scenarios of supercluster/cluster formation hold, then clusters should “point” towards their nearest neighbor rich cluster, if the nearest-neighbor cluster is less than some specific distance away. Optical data hinted that such an effect existed as long as the cluster/nearest- neighbor separation was under about 25 Mpc (Hubble constant = 50 km/sec/Mpc). Our own analysis shows no such effect, which favors “bottom up” scenarios of galaxy/cluster formation.
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Details
- Title
- Orientations, ellipticities and nearest-neighbor correlations in rich clusters of galaxies
- Creators
- M.P. Ulmer - Northwestern UniversityS.L.W. McMillan - Drexel UniversityM.P. Kowalski - United States Naval Research Laboratory
- Publication Details
- Advances in space research, v 10(2), pp 13-15
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Scopus ID
- 2-s2.0-44949268123
- Other Identifier
- 991019231659204721