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(Redirected from Coma galaxy cluster)
:''This article is about the cluster of galaxies named the Coma Cluster. For the star cluster, see Coma star cluster.''
The 'Coma Cluster' (''Abell 1656'') is a large cluster of galaxies that contains over 1000 identified galaxies.
The cluster's mean distance from Earth is 99 Mpc (321 million light years)[1] . Its 10 brightest spiral galaxies have apparent magnitudes of 12-14 that are observable with amateur telescopes larger than 20 cm. The central region is dominated by two giant elliptical galaxies: NGC 4874 and NGC 4889[2]. The cluster is within a few degrees of the north galactic pole on the sky.
As is usual for clusters of this richness, the galaxies are overwhelmingly elliptical and S0 galaxies, with only a few spirals of younger age, and many of them probably near the outskirts of the cluster.
The full extent of the cluster was not understood until it was more thoroughly studied in the 1950s by astronomers at Mount Palomar Observatory, although many of the individual galaxies in the cluster had been identified previously.
★ Fornax Cluster - ''another nearby cluster of galaxies''
★ Virgo Cluster - ''another nearby cluster of galaxies''
★ 'NASA APOD': The Coma Cluster of Galaxies
★ 'WIKISKY.ORG': SDSS image, Coma Cluster
1. Coma Cluster Encyclopedia of Astronomy and Astrophysics
2. Galaxy aggregates in the Coma cluster, Conselice, Christopher J., Gallagher, John S., III, , , Monthly Notices of the Royal Astronomical Society, 1998
★ The dynamical state of the Coma cluster with XMM-Newton
★ Very Small Array observations of the Sunyaev-Zel'dovich effect in nearby galaxy clusters
:''This article is about the cluster of galaxies named the Coma Cluster. For the star cluster, see Coma star cluster.''
The 'Coma Cluster' (''Abell 1656'') is a large cluster of galaxies that contains over 1000 identified galaxies.
The cluster's mean distance from Earth is 99 Mpc (321 million light years)[1] . Its 10 brightest spiral galaxies have apparent magnitudes of 12-14 that are observable with amateur telescopes larger than 20 cm. The central region is dominated by two giant elliptical galaxies: NGC 4874 and NGC 4889[2]. The cluster is within a few degrees of the north galactic pole on the sky.
| Contents |
| Cluster members |
| See also |
| External links |
| References |
Cluster members
An image of the Coma Cluster Credit: NASA/Expedition 6
Map of the central part of the Coma Cluster
As is usual for clusters of this richness, the galaxies are overwhelmingly elliptical and S0 galaxies, with only a few spirals of younger age, and many of them probably near the outskirts of the cluster.
The full extent of the cluster was not understood until it was more thoroughly studied in the 1950s by astronomers at Mount Palomar Observatory, although many of the individual galaxies in the cluster had been identified previously.
See also
★ Fornax Cluster - ''another nearby cluster of galaxies''
★ Virgo Cluster - ''another nearby cluster of galaxies''
External links
★ 'NASA APOD': The Coma Cluster of Galaxies
★ 'WIKISKY.ORG': SDSS image, Coma Cluster
References
1. Coma Cluster Encyclopedia of Astronomy and Astrophysics
2. Galaxy aggregates in the Coma cluster, Conselice, Christopher J., Gallagher, John S., III, , , Monthly Notices of the Royal Astronomical Society, 1998
★ The dynamical state of the Coma cluster with XMM-Newton
★ Very Small Array observations of the Sunyaev-Zel'dovich effect in nearby galaxy clusters
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