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For refcode 1998AJ....116.1573B:
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1998AJ....116.1573B ENVIRONMENTS OF REDSHIFT SURVEY COMPACT GROUPS OF GALAXIES ELIZABETH J. BARTON Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138; ebarton@cfa.harvard.edu REINALDO R. DE CARVALHO Departamento de Astrofisica, Observatorio Nacional, Rua General Jose Cristino 77, 20921-400 Sao Cristovao, Rio de Janeiro, Brazil; reinaldo@maxwell.on.br AND MARGARET J. GELLER Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138; mgeller@cfa.harvard.edu Received 1997 December 11; revised 1998 May 5 ABSTRACT Redshift survey compact groups (RSCGs) are tight knots of N >= 3 galaxies selected from the CfA2+SSRS2 redshift survey. The selection is based on physical extent and association in redshift space alone. We measured 300 new redshifts of fainter galaxies within 1 h^-1^ Mpc of 14 RSCGs to explore the relationship between RSCGs and their environments. Thirteen of 14 RSCGs are embedded in overdense regions of redshift space. The systems range from a loose group of five members to an Abell cluster. The remaining group, RSCG 64, appears isolated. RSCGs are isolated and distinct from their surroundings to varying degrees, as are the Hickson compact groups. Among the 13 embedded RSCGs, three are distinct from their general environments (RSCG 9, RSCG 11, and RSCG 85). Key words: galaxies: clusters: general-galaxies: distances and redshifts- galaxies: interactions
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