Substructure: Clues to the Formation of Clusters of Galaxies | Zendy

Michael J. West | Zendy; C. Jones | Zendy; W. Forman | Zendy

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Substructure: Clues to the Formation of Clusters of Galaxies

Author(s) -

Michael J. West,

C. Jones,

W. Forman

Publication year - 1995

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/309673

Subject(s) - supercluster (genetic) , substructure , astrophysics , cluster (spacecraft) , galaxy cluster , physics , galaxy groups and clusters , galaxy , spatial distribution , astronomy , geography , biology , phylogenetic tree , engineering , biochemistry , structural engineering , gene , computer science , programming language , remote sensing

We have examined the spatial distribution of substructure in clusters ofgalaxies using Einstein X-ray observations. Subclusters are found to have amarkedly anisotropic distribution that reflects the surrounding matterdistribution on supercluster scales. Our results suggest a picture in whichcluster formation proceeds by mergers of subclusters along large-scalefilaments. The implications of such an anisotropic formation process for theshapes, orientations and kinematics of clusters are discussed briefly.Comment: 7 pages, uuencoded compressed postscript. To appear in ApJ Letters (September 20, 1995 issue

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