A photometric study of clusters of galaxies

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Astronomical Photometry, Galactic Clusters, Luminous Intensity, Atmospheric Attenuation, Brightness, Data Reduction, Isophotes, Optical Correction Procedure, Red Shift

Scientific paper

Photometry is reported for the galaxies in the six rich clusters Abell 732, 801, 1132, 1377, 1413, and 2065. These clusters cover the redshift range from 0.05 to 0.20. The photometry extends to 2 or 3 mag below the brightest in each cluster and includes galaxies within an area roughly 2 Mpc in diameter at the distance of each cluster. All results have been corrected for atmospheric seeing effects. Metric magnitudes, within a metric diameter of 20.3 kpc, and unextrapolated isophotal magnitudes, within an isophote of 23.0 mag per sq sec of arc, are given for 1086 galaxies from 2889 individual measurements. Isophotal mean surface brightnesses are also reported which confirm a generally lower surface brightness for the most luminous galaxies in the cluster. Finding charts and comparisons with other photometric studies are included.

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