Spectroscopy of the neighboring massive clusters Abell 222 and Abell 223

Abstract

We present a spectroscopic catalog of the neighboring massive clusters Abell 222 and Abell 223. The catalog contains the positions, redshifts, R magnitudes, V-R color, as well as the equivalent widths for a number of lines for 183 galaxies, 153 of them belonging to the A 222 and A 223 system. We determine the heliocentric redshifts to be z=0.2126+/-0.0008 for A 222 and z=0.2079+/-0.0008 for A 223. The velocity dispersions of both clusters in the cluster restframe are about the same: sigma = 1014^{+90}_{-71} km/s and sigma = 1032^{+99}_{-76} km/s for A 222 and A 223, respectively. While we find evidence for substructure in the spatial distribution of A 223, no kinematic substructure can be detected. From the red cluster sequence identified in a color--magnitude--diagram we determine the luminosity of both clusters and derive mass--to--light ratios in the R--band of (M/L)_A222 = (202+/-43) h_70 M_{su}n/L_{sun} and (M/L)_A223 = (149+/-33) h_70 M_{sun}/L_{sun}. Additionally we identify a group of background galaxies at z ~ 0.242.

arXiv commentAccepted for publication in A&A, 10 pages, 9 figures, full version of table 2 included in source distribution, version with higher quality images available from http://www.astro.uni-bonn.de/~dietrich/

References in corpus (13)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Star Formation in Galaxies Along the Hubble Sequence
• RVSAO 2.0: Digital Redshifts and Radial Velocities
• Galaxy Cluster Virial Masses and Omega
• The 2dF Galaxy Redshift Survey: Spectral Types and Luminosity Functions
• The Lx-T and Lx-sigma Relationships for Galaxy Clusters Revisited
• A non-parametric and scale-independent method for cluster analysis II: the multivariate case
• Wide field weak lensing observations of A1689
• A wide-field spectroscopic survey of the cluster of galaxies Cl0024+1654: I. The catalogue
• ROSAT PSPC Observations of the Richest ($R\ge 2$) ACO Clusters
• Mass-to-Light Ratios of Groups and Clusters of Galaxies
• X-ray Shapes of Distant Clusters: the Connection to Blue Galaxy Fractions
• H-Band and Spectroscopic Properties of Abell 1644

Cited by in corpus (7)

• Detection of hot gas in the filament connecting the clusters of galaxies Abell 222 and Abell 223
• A filament of dark matter between two clusters of galaxies
• Constraints on the Alignment of Galaxies in Galaxy Clusters from $\sim$14,000 Spectroscopic Members
• Weak lensing study of dark matter filaments and application to the binary cluster A 222 and A 223
• Mass and Light in the Supercluster of galaxies : MS0302+17
• The merging cluster Abell 1758 revisited: multi-wavelength observations and numerical simulations
• The clusters Abell~222 and Abell~223: a multi-wavelength view