Baltic astronomy | |
Morphological Distribution of Galaxies in Some Nearby Clusters | |
article | |
Mariwan A. Rasheed1  Khalid K. Mohammad1  | |
[1] Department of Physics, College of Science, University of Sulaimani;Development Center for Research and Training, University of Human Development | |
关键词: galaxy clusters; galaxy morphology; | |
DOI : 10.1515/astro-2019-0007 | |
来源: Institute of Theoretical Physics and Astronomy | |
【 摘 要 】
We study the morphological distribution of galaxies in some nearby clusters, using the Sloan Digital Sky Survey – Data Release 9 (SDSS-DR9). The segregation between early-type galaxies and late-type ones is investigated in g – r / u – g color space, using the color cut u – r = 2.22. The results are compared with those obtained using a color cut that changes with magnitude. They are found to be consistent, particularly for late-type galaxies. The results obtained by the fixed color-cut criterion are also found to be consistent with those obtained by the inverse concentration index parameter, especially for early-type galaxies. Comparable results are obtained for the stacked sample, whose morphologies, given by the fixed color-cut criterion are compared with the visual morphologies provided by the Galaxy Zoo project. A good degree of consistency is seen, which becomes more evident for late-type galaxies.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO202108210000458ZK.pdf | 1717KB | download |