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1960•Monthly Notices of the Royal Astronomical SocietyRequires access

An Analysis of the Radial Velocities of Galaxies in the Virgo Cluster

S. van den Bergh, C. S. Beals

Open publisher page 6 citations

Abstract

It is found that the radial velocities in the Virgo cluster do not deviate significantly from a Gaussian distribution. However, reasonable assumptions regarding the mass to luminosity ratios of galaxies indicate that there is no equipartition of energy between the cluster members. Stable binary and multiple systems appear to exist within the cluster. The velocity differences of members of close pairs may indicate mass to light ratios smaller than those obtained from the virial theorem.

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What this paper is about

It is found that the radial velocities in the Virgo cluster do not deviate significantly from a Gaussian distribution. However, reasonable assumptions regarding the mass to luminosity ratios of galaxies indicate that there is no equipartition of energy between the cluster members. Stable binary and multiple systems appear to exist within the cluster. The velocity differences of members of close pairs may indicate mass to light ratios smaller than those obtained from the virial theorem.

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Available abstract

It is found that the radial velocities in the Virgo cluster do not deviate significantly from a Gaussian distribution. However, reasonable assumptions regarding the mass to luminosity ratios of galaxies indicate that there is no equipartition of energy between the cluster members. Stable binary and multiple systems appear to exist within the cluster. The velocity differences of members of close pairs may indicate mass to light ratios smaller than those obtained from the virial theorem.

Key concepts: Physics, Virial mass, Virgo Cluster, Astrophysics, Virial theorem, Equipartition theorem, Radial velocity, Cluster (spacecraft)

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