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Morphological Distribution of Galaxies in Some Nearby Clusters
- Source :
- Open Astronomy, Vol 28, Iss 1, Pp 98-109 (2019)
- Publication Year :
- 2019
- Publisher :
- De Gruyter, 2019.
-
Abstract
- 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.
- Subjects :
- galaxy clusters
galaxy morphology
Astronomy
QB1-991
Subjects
Details
- Language :
- English
- ISSN :
- 25436376
- Volume :
- 28
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Open Astronomy
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1b9c7bf7ee1342d2b7ae207eaea9dfbc
- Document Type :
- article
- Full Text :
- https://doi.org/10.1515/astro-2019-0007