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| Paper: |
CCD surface photometry of Corona Borealis cluster galaxies |
| Volume: |
10, Evolution of the Universe of Galaxies: Edwin Hubble Centennial Symposium |
| Page: |
103 |
| Authors: |
Gudehus, Donald H. |
| Abstract: |
The photometric properties of cluster galaxies are useful for a number of cosmological tests. Data are presented for cluster Abell 2065 in two broad bands (V and 8000 A), with the goal of understanding the complicating processes of luminosity evolution and dynamical evolution. The data were analyzed to remove the effects of overlapping images and blurring from seeing. The radius parameter vs. magnitude plot for this cluster shows that a few of the brightest galaxies have undergone some merging, increasing their diameters by up to a factor of 2.3 times that expected for a galaxy of the same magnitude. Seeing-free color gradients are generally quite small. While merging of the brightest galaxies might be expected to wipe out color gradients, the gradients are also generally small in galaxies which are at least 1.5 magnitudes fainter than the magnitude where merging appears to have operated. |
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