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- Title
The Luminosity Function of Galaxies in Some Nearby Clusters.
- Authors
Rasheed, Mariwan A.; Mohammad, Khalid K.
- Abstract
In the present work, the galaxy luminosity function (LF) has been studied for a sample of seven clusters in the redshift range (0.0 ≲ z ≲ 0.1), within Abell radius (1.5 h-1 Mpc), in the five SDSS passbands ugriz. In each case, the absolute magnitude distribution is found and then fitted with a Schechter function. The fitting is done, using the χ² - minimization method to find the best values of Schechter parameters Ф* (normalization constant), M* (characteristic absolute magnitude), and α (faint-end slope). No remarkable changes are found in the values of M* and α, for any cluster, in any passband. Furthermore, the LF does not seem to vary with such cluster parameters as richness, velocity dispersion, and Bautz-Morgan morphology. Finally, it is found that M* becomes brighter toward redder bands, whereas almost no variation is seen in the value of α with passband, being around (-1.00).
- Subjects
STELLAR luminosity function; GALAXY clusters; REDSHIFT; GALAXY formation; GALACTIC evolution
- Publication
UHD Journal of Science & Technology, 2021, Vol 5, Issue 2, p1
- ISSN
2521-4209
- Publication type
Article
- DOI
10.21928/uhdjst.v5n2y2021.pp1-10