Spectroscopic observations of A3571 (Quintana+, 1993)

Details Spectroscopic observations of A3571 (Quintana+, 1993) Spectroscopic observations of A3571 (Quintana+, 1993)

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ycat..41010475q&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/101/475. Originally published in: 1993A&AS..101..475Q

Physics

Clusters: Galaxy, Radial Velocities

Scientific paper

Spectroscopic data and density counts are presented for this southern cluster, which seems to belong to the outskirts of the Shapley 8 concentration (= A 3558 = SC 1326-311). Using telescopes at the Cerro Tololo Interamerican Observatory and La Silla Observatory a total of 72 galaxy velocities were measured giving a mean redshift of 0.0384 and a global velocity dispersion of 1022 (+99, -77) km/s. A preliminary analysis of velocity and density data suggests the presence of various subgroups. The central core of the cluster is dominated by a very elongated, distorded and diffuse cD galaxy. This cluster may be an example where the cD was formed early in the collapse process of a cluster which has not reached overall virialization yet. The derived X-ray luminosity of ~2x1044erg/s in the 2-6keV band places this cluster in the group of strong X-ray cluster sources. (1 data file).

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