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Article Contents
- Abstract
- Chapter I. Introduction
- 1.Groups of galaxies
- 2.Statistical approach to a study of
physical groups
- Chapter II. Observation program
- 3.Practical difficulties in the
survey work
- 4.Observation procedure
- 5.Results
- 6.Colors of nuclei of spiral
galaxies
- Chapter III. Analysis of results
- 7.Distributions of position angles
and separations
- 8.Number of satellites and nuclear
color of central galaxy
- 9.Number of satellites and mass of
central-galaxy
- Chapter IV. Distributions of
absolute diameters and magnitudes
- 10.Distribution of logarithmic
diameter
- 11.Correlation between absolute
magnitude and diameter
- 12.The luminosity function
- 13.Magnitude distribution in the
Virgo cluster
- Chapter V. Space density and mass function
- 14.Space density from magnitudes
and diameters
- 15.Space density from redshifts
- 16.The mass function
- References