Redshifts for a Sample of Radio-Selected Poor Clusters

Details Redshifts for a Sample of Radio-Selected Poor Clusters Redshifts for a Sample of Radio-Selected Poor Clusters

2002-03-18

arxiv.org/abs/astro-ph/0203281v1

Astronomy and Astrophysics

Astrophysics

45 pages including tables and figures, to appear in the Astronomical Journal

Scientific paper

10.1086/340694

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 FR 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.

Affiliated with

Also associated with

No associations

Rating

Redshifts for a Sample of Radio-Selected Poor 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 Redshifts for a Sample of Radio-Selected Poor Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Redshifts for a Sample of Radio-Selected Poor Clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-576297