Affiliation:
1. St. Petersburg State University , 7/9 Universitetskaya nab., St. Petersburg, Saint Petersburg 199034, Russia
Abstract
ABSTRACT
We perform an analysis of the luminosity functions (LFs) of two types of ringed galaxies – polar-ring galaxies and collisional ring galaxies – using data from the Sloan Digital Sky Survey (SDSS). Both classes of galaxies were formed as a result of interaction with their environment and they are very rare objects. We constructed LFs of galaxies by different methods and found their approximations by the Schechter function. The luminosity functions of both types of galaxies show a systematic fall-off at low luminosities. The polar structures around bright (Mr ≤ −20m) and red (g − r > +0.8) galaxies are about twice as common as around blue ones. The LF of collisional rings is shifted towards brighter luminosities compared to polar-ring galaxies. We analysed the published data on the ringed galaxies in several deep fields and confirmed the increase in their volume density with redshift: up to z ∼ 1 their density grows as (1 + z)m, where m ≳ 5.
Funder
Alfred P. Sloan Foundation
U.S. Department of Energy
Office of Science
Carnegie Mellon University
Johns Hopkins University
University of Tokyo
Lawrence Berkeley National Laboratory
Leibniz-Institut für Astrophysik Potsdam
New Mexico State University
New York University
University of Notre Dame
MCTI
Ohio State University
Pennsylvania State University
Universidad Nacional Autónoma de México
University of Arizona
University of Colorado Boulder
Oxford University
University of Portsmouth
University of Utah
University of Virginia
University of Washington
Vanderbilt University
Yale University
National Aeronautics and Space Administration
California Institute of Technology
Publisher
Oxford University Press (OUP)
Subject
Space and Planetary Science,Astronomy and Astrophysics
Cited by
6 articles.
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