Coma cluster


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Coma cluster

A very rich cluster of galaxies, near the north galactic pole, in the constellation Coma Berenices that contains at least 1000 bright elliptical and S0 galaxies. It is about 6 megaparsecs in diameter and is in the form of two equal subclumps, each with a central dominant galaxy associated with a radio source: an elliptical, NGC 4889, and an S0 galaxy, NGC 4874. The cluster is about 90 megaparsecs distant and is moving away from Earth at approximately 6700 km s–1.

Coma cluster

[′kō·mə ‚kləs·tər]
(astronomy)
A group of over 1000 bright galaxies having a recession velocity of about 4300 miles (6900 kilometers) per second.
An open cluster of about 100 stars at a distance of about 80 parsecs (1.5 × c1015 miles or 2.5 × 1015 kilometers).
References in periodicals archive ?
They are likely members of the Coma Cluster of Galaxies, which is one of the densest clusters known, containing thousands of galaxies.
It is also worth noting that the region of the sky studied by the observatory also included the galaxy-rich Coma Cluster, which alone added some 1000 specks of light into the image.
Richer and denser than the Virgo Cluster and containing thousands of galaxies, the Coma Cluster (Abell 1656) is a telescopic wonderland that takes its name from its parent constellation, Coma Berenices.
In spring 2014, researchers pointed Dragonfly at the well-studied Coma cluster, a conglomeration of thousands of galaxies.
Eight-hundred fifty-four "ultra-dark galaxies" in the Coma Cluster have been discovered by a team of researchers from Stony Brook (N.Y.) University and the National Astronomical Observatory of Japan analyzing data from the 8.2-meter Subaru Telescope.
ISLAMABAD -- After analysing data obtained with the Subaru Telescope, astronomers have discovered 854 "ultra dark galaxies" filled with mysterious dark matter in the Coma Cluster, one of the richest cluster of galaxies containing thousands of systems.
The Coma cluster, a non-cool cluster, is filled with gas at a scorching 100 million degrees Celsius.
Zwicky noted that the radial velocities of the galaxies in the Coma Cluster of galaxies (Figure 3) were much larger than what would be expected by assuming that the galaxies have the same ratio of mass to light, M/L, as the Sun.
It shares an evolutionary path with some of the most massive clusters we see today, including the Coma Cluster and the recently discovered El Gordo Cluster," said team member Mark Brodwin of the University of Missouri-Kansas City.
In addition, 18 papers reported research results in such areas as the dark matter halo shape of NGC 2976 via stellar kinematics, investigating inner disk lifetimes in Ophiuchus, barred galaxies in the Coma Cluster, and detailed abundances in a metal-poor stellar stream.
Other LJMU astronomers are currently leading the Hubble Space Telescope survey of the COMA cluster, located some 280 million light years from Earth.
It will also look at the Cassiopeia A supernova remnant and the Coma Cluster of galaxies, both of which have been well studied by other satellites.