SIMBAD references

2002AJ....123.3018M - Astron. J., 123, 3018-3040 (2002/June-0)

Redshifts for a sample of radio-selected poor clusters.


Abstract (from CDS):

Multifiber optical spectroscopy has been performed on galaxies in the vicinity of strong, nearby radio galaxies. These radio galaxies were selected from the 3CR and B2 catalogs based on their exclusion from the Abell catalog, which is puzzling given the hypothesis that an external medium is required to confine the radio plasma of such galaxies. Velocities derived from the spectra were used to confirm the existence of groups and poor clusters in the fields of most of the radio galaxies. We find that all radio galaxies with classical Fanaroff-Riley type I morphologies prove to reside in clusters, whereas the other radio galaxies often appear to be recent galaxy-galaxy mergers in regions of low galaxy density. These findings confirm the earlier result that the existence of extended X-ray emission combined with a statistical excess of neighboring galaxies can be used to identify poor clusters associated with radio galaxies.

Abstract Copyright:

Journal keyword(s): Galaxies: Active - Galaxies: Clusters: General - Galaxies: Distances and Redshifts

VizieR on-line data: <Available at CDS (J/AJ/123/3018): table1.dat refs.dat table2.dat table3.dat>

Nomenclature: Table 2: [MLO2002] B2 HHMM+DD JHHMMSS.s+DDMMSS N=251, [MLO2002] 3C NNN JHHMMSS.s+DDMMSS N=82, [MLO2002] GB2 1615+351 JHHMMSS.s+DDMMSS N=38. Table 3: [MLO2002] JHHMMSS.s+DDMMSS N=95. Tables 2-3: [MLO2002] B2 HHMM+DD Group N=19, [MLO2002] 3C NNN Group N=5, [MLO2002] 1651+351 Group N=1.

CDS comments: Table 1: B2 1321+31 is NGC 5127; Table 2: GB2 1651+351 is a misprint for GB2 1615+351.

Simbad objects: 495

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