Bright galaxies in rich clusters - Test of a statistical model for magnitude distributions

Details Bright galaxies in rich clusters - Test of a statistical model for magnitude distributions Bright galaxies in rich clusters - Test of a statistical model for magnitude distributions

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...206..939g&link_type=abstract

Astrophysical Journal, vol. 206, June 15, 1976, pt. 1, p. 939-957. NSF-supported research.

Mathematics

Probability

38

Astronomical Models, Galactic Clusters, Luminous Intensity, Mathematical Models, Statistical Analysis, Astronomical Photometry, Frequency Distribution, Galactic Radiation, Mass Distribution, Power Spectra, Probability Distribution Functions, Random Errors

Scientific paper

A statistical model for the magnitude distribution of bright galaxies in rich clusters is analyzed which is based on the hypothesis that the distribution of absolute magnitudes in a cluster is controlled by a universal statistical luminosity function. The normalization parameter is allowed to vary from cluster to cluster according to a power-law distribution in cluster mass in order to fit the distribution of clusters in Abell richness class. The model is tested by comparing predicted magnitude distributions with the observed distributions of magnitudes of first-, second-, and third-ranked cluster members compiled by Sandage and Hardy (1973). It is found that the frequency distributions of magnitudes for all three ranks are qualitatively consistent with the model predictions, that there may be a magnitude-richness correlation for the three ranks in richness classes 1 and 2 with z not greater than 0.1, and that an exponential distribution in the cluster mass parameter gives a reasonable fit to the Abell counts of rich clusters. Several discrepancies in the model predictions are examined. It is concluded that the present model is a reasonable and useful first approximation within the constraints of the observations.

Affiliated with

Also associated with

No associations

Rating

Bright galaxies in rich clusters - Test of a statistical model for magnitude distributions 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 Bright galaxies in rich clusters - Test of a statistical model for magnitude distributions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bright galaxies in rich clusters - Test of a statistical model for magnitude distributions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1781641