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J/A+A/430/19 VRI photometry of Abell 3921 galaxies (Ferrari+, 2005)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
tablea.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A+A/430/19
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-r--r--r-- 1 cats archive 20793 Jan 13 2005 tablea.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe :J/A+A/430/19 VRI photometry of Abell 3921 galaxies (Ferrari+, 2005)
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Dynamical state and star formation properties of the merging galaxy cluster
Abell 3921.
Ferrari C., Benoist C., Maurogordato S., Cappi A., Slezak E.
<Astron. Astrophys. 430, 19 (2005)>
=2005A&A...430...19F
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ADC_Keywords: Clusters, galaxy ; Redshifts ; Photometry, VRI ; Equivalent widths
Keywords: galaxies: clusters: general -
galaxies: clusters: individual: Abell 3921 -
galaxies: distances and redshifts - cosmology: observations
Abstract:
We present the analysis and results of a new VRI photometric and
spectroscopic survey of the central 1.8x1.2Mpc^2^ region of the
galaxy cluster A3921 (z=0.094). We detect the presence of two dominant
clumps of galaxies with a mass ratio of 5: a main cluster centred on
the Brightest Cluster Galaxy (BCG) (A3921-A), and an NW sub-cluster
(A3921-B) hosting the second brightest cluster galaxy. The distorted
morphology of the two sub-clusters suggests that they are interacting,
while the velocity distribution of 104 confirmed cluster members does
not reveal strong signatures of merging.
Description:
The optical observations of Abell 3921 were carried out using the Wide
Field Imager (WFI) mounted at the Cassegrain focus of the MPG/ESO 2.2m
telescope at La Silla observatory. The data, including photometric
calibration images, were obtained between August 20th and 23rd, 2001.
Positions, V, R, I-band magnitudes (AB magnitude system), radial
velocity measurements, and equivalent widths of [OII]3727AA and
Hdelta lines of 239 objects in the central region of the galaxy
cluster Abell 3921 are presented.