Physics
Scientific paper
Oct 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..33920795v&link_type=abstract
VizieR On-line Data Catalog: J/A+A/392/795. Originally published in: 2002A&A...392..795V
Physics
Clusters: Galaxy, Redshifts, Radio Sources, X-Ray Sources, Magnitudes
Scientific paper
We present results from optical, X-ray and radio observations of two X-ray bright (LX~1045erg/s) galaxy clusters. Abell 1451 is at redshift z=0.1989 and has line-of-sight velocity dispersion σV=1330km/s as measured from 57 cluster galaxies. It has regular X-ray emission without signs of substructure, a Gaussian velocity distribution, lack of a cooling flow region and significant deviations from the observed scaling laws between luminosity, temperature and velocity dispersion, indicating a possible merging shock. There is only one spectroscopically confirmed cluster radio galaxy, which is close to the X-ray peak. 1RXS J131423.6-251521 (for short RXJ1314-25) has z=0.2474 and σV=1100km/s from 37 galaxies. There are two distinct galaxy groups with a projected separation of ~700kpc. The velocity histogram is bi-modal with a redshift-space separation of ~1700km/s, and the X-ray emission is double peaked. Although there are no spectroscopically confirmed cluster radio galaxies, we have identified a plausible relic source candidate.
(4 data files).
Hunstead Richard
Lemonon L.
Murphy Tara
Pierre Mandrou
Valtchanov Ivan
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