Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91..697o&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 91, April 1986, p. 697-704.
Astronomy and Astrophysics
Astronomy
20
Astronomical Photometry, Galactic Clusters, Luminosity, Spatial Distribution, Data Reduction, Maximum Likelihood Estimates, Photographic Plates
Scientific paper
As part of a large program to study the spatial and luminosity distributions of galaxies in the nearby Abell clusters, the results of a photometric study of Abell 168 are presented and compared to the previous results of Dressler (1978). The previous result is confirmed that the faint end of the luminosity function for the galaxies in the central 0.2 sq deg of this cluster is quite flat (alpha = -1.0 in the Schechter formalism). The slope of the faint end appears to be fairly normal if galaxies from a larger region (1 sq deg) are included, but this may be due to a larger than expected contribution of background galaxies. Consequently, the faint end of the luminosity function of galaxies in a 0.2 sq deg region (and possibly also in a 1 sq deg region) centered on A168 is flatter than the 'universal' luminosity function (a Schechter function with alpha = -1.25). Nevertheless, the luminosity functions for both these regions are well fit by Schechter functions. A study of the spatial distribution of galaxies indicates that the radial dependence of the projected surface density is consistent with a power law of slope - 1.01 + or - 0.09.
Ernst R. M.
Hoessel John G.
Oegerle William R.
No associations
LandOfFree
The nearby Abell clusters. I - Abell 168 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The nearby Abell clusters. I - Abell 168, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The nearby Abell clusters. I - Abell 168 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1101437