Abell 1930
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Introduction
We present photographic V25 and
B25 magnitudes and colour indices for 119 objects within a 10
arcmin square field centred on the cluster Abell 1930.
Data Format
-
identification number
-
V25, integrated V-band magnitude
within the 25 V mag.arcsec-2 isophote
-
B25, integrated B-band magnitude
within the 25 B mag.arcsec-2 isophote
-
CI25, (B - V) colour of the
image bounded by the 25 B mag.arcsec-2 isophote
We consider a rough average value of the accuracy
of these magnitudes to be about 0·15 mag in V25, 0·2
mag in B25 and 0·18 mag in CI25, based on
repeated measurements. The sample faintward of V25 = 17·8
contains field stars. Galaxy N1 is contaminated by a nearby star; the colour
refers to the area within the 23·5 B mag.arcsec-2 isophote,
which is uncontaminated. Objects for which no B25 is quoted
are fainter than the blue plate limit.
References
-
Austin TB, Godwin JG, Peach JV. Photometry
of the cluster A 1930 and the m* - z relation. Mon Not R Astr Soc 1975;
171: 135-142.
-
Godwin JG. Clusters of galaxies. DPhil
thesis, Oxford 1976.
Links to Data Files
(To be completed)
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[End of document, updated to 25 April 1997]