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Title: An analytic expression for the luminosity function for galaxies

Abstract

A new analytic approximation for the luminosity function for galaxies is proposed, which shows good agreement with both a luminosity distribution for bright nearby galaxies and a composite luminosity distribution for cluster galaxies. The analytic expression is proportional to L/sup -5///sup 4/e/sup -//sup L*/, where L* is a characteristic luminosity corresponding to a characteristic absolute magnitude M*/sub B0//sub -//sub 2//sub 0//sub .6/For an individual cluster, the characteristic magnitude may be determined with an accuracy of approx.0.25 mag, suggesting its use as a standard candle. The analytic expression is used to compute an expected richness-absolute magnitude correlation for first ranked cluster galaxies and an expected dispersion, which are compared with the data of Sandage and Hardy. (AIP)

Authors:
Publication Date:
Research Org.:
California Institute of Technology and the Institute for Advanced Study
OSTI Identifier:
7285770
Resource Type:
Journal Article
Journal Name:
Astrophys. J.; (United States)
Additional Journal Information:
Journal Volume: 203:2
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; GALAXIES; LUMINOSITY; GALAXY CLUSTERS; COSMOLOGY; DISTRIBUTION; GALACTIC EVOLUTION; PHOTOMETRY; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; 640105* - Astrophysics & Cosmology- Galaxies

Citation Formats

Schechter, P. An analytic expression for the luminosity function for galaxies. United States: N. p., 1976. Web. doi:10.1086/154079.
Schechter, P. An analytic expression for the luminosity function for galaxies. United States. doi:10.1086/154079.
Schechter, P. Thu . "An analytic expression for the luminosity function for galaxies". United States. doi:10.1086/154079.
@article{osti_7285770,
title = {An analytic expression for the luminosity function for galaxies},
author = {Schechter, P.},
abstractNote = {A new analytic approximation for the luminosity function for galaxies is proposed, which shows good agreement with both a luminosity distribution for bright nearby galaxies and a composite luminosity distribution for cluster galaxies. The analytic expression is proportional to L/sup -5///sup 4/e/sup -//sup L*/, where L* is a characteristic luminosity corresponding to a characteristic absolute magnitude M*/sub B0//sub -//sub 2//sub 0//sub .6/For an individual cluster, the characteristic magnitude may be determined with an accuracy of approx.0.25 mag, suggesting its use as a standard candle. The analytic expression is used to compute an expected richness-absolute magnitude correlation for first ranked cluster galaxies and an expected dispersion, which are compared with the data of Sandage and Hardy. (AIP)},
doi = {10.1086/154079},
journal = {Astrophys. J.; (United States)},
number = ,
volume = 203:2,
place = {United States},
year = {1976},
month = {1}
}