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Redshifts for a sample of radio-selected poor clusters
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Miller, Neal A. Owen, Frazer N. Ledlow, Michael J. Hill, John M. |
| Copyright Year | 2002 |
| Description | 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. |
| File Size | 1155540 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20020082932 |
| Archival Resource Key | ark:/13960/t8wb04d11 |
| Language | English |
| Publisher Date | 2002-06-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Galactic Clusters Spectroscopy Red Shift Hypotheses X Rays Radio Galaxies Plasmas Physics Exclusion Emission Catalogs Publications Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
