galaxy cluster Comparison Table

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galaxy cluster comparison table

Subject has number of galaxie is part of is a kind of has wavelength has redshift has diameter is an instance of has synonym has mass has definition has brightest member has distance

Centaurus cluster 10² to 10³ (order of magnitude) celestial sphere X-ray X-ray source 3U 1247-41 A cluster of galaxies. Its radio counterpart is compact and located inside NGC 4696. 200 Mpc

galaxy group < 100 galaxy cluster A small gathering of galaxies, smaller than a cluster. The Milky Way is part of the Local Group, which contains about thirty galaxies.

Hercules cluster 75 Local Supercluster z = 0.036 galaxy cluster 3U 1551 + 15 An unsymmetrical cluster. Half of the galaxies are spiral or irregular and about half elliptical or S0. It contains a rather large number of disturbed and peculiar galaxies. The "missing mass", if present, must constitute more than 95% of the total.

Perseus cluster 500 Local Supercluster z = 0.0183 galaxy cluster 2 × 10¹⁵ M_sun A diffuse, irregular cluster (richness class 2) dominated by and centered on the Seyfert galaxy NGC 1275 (Perseus A). Mass required to bind the cluster, greater than 10¹⁵ M_sun. NGC 1275

rich cluster > 100 galaxy cluster 1 Mpc Galaxy cluster with 100 or more galaxies within a volume comparable to that of a loose group. Scale of cluster, about 1 Mpc.

Sculptor Group 10² to 10³ (order of magnitude) Local Supercluster galaxy cluster The nearest group of galaxies to the Local Group. NGC 253 4 to 10 million light-years

Subject	has number of galaxie	is part of	is a kind of	has wavelength	has redshift	has diameter	is an instance of	has synonym	has mass	has definition	has brightest member	has distance
Centaurus cluster	10² to 10³ (order of magnitude)	celestial sphere		X-ray			X-ray source	3U 1247-41		A cluster of galaxies. Its radio counterpart is compact and located inside NGC 4696.		200 Mpc
galaxy group	< 100		galaxy cluster							A small gathering of galaxies, smaller than a cluster. The Milky Way is part of the Local Group, which contains about thirty galaxies.
Hercules cluster	75	Local Supercluster			z = 0.036		galaxy cluster	3U 1551 + 15		An unsymmetrical cluster. Half of the galaxies are spiral or irregular and about half elliptical or S0. It contains a rather large number of disturbed and peculiar galaxies. The "missing mass", if present, must constitute more than 95% of the total.
Perseus cluster	500	Local Supercluster			z = 0.0183		galaxy cluster		2 × 10¹⁵ M_sun	A diffuse, irregular cluster (richness class 2) dominated by and centered on the Seyfert galaxy NGC 1275 (Perseus A). Mass required to bind the cluster, greater than 10¹⁵ M_sun.	NGC 1275
rich cluster	> 100		galaxy cluster			1 Mpc				Galaxy cluster with 100 or more galaxies within a volume comparable to that of a loose group. Scale of cluster, about 1 Mpc.
Sculptor Group	10² to 10³ (order of magnitude)	Local Supercluster					galaxy cluster			The nearest group of galaxies to the Local Group.	NGC 253	4 to 10 million light-years

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