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The second most massive galaxy cluster next to El Gordo is RCS2 J2327, a galaxy cluster with the mass of 2 quadrillion suns. Also has a systematic designation of ACT-CL J0102-4915. [6] [7] [8] Musket Ball Cluster: Named in comparison to the Bullet Cluster, as this one is older and slower galaxy cluster merger than the Bullet Cluster.
The Abell catalogue is a catalogue of approximately 4,000 galaxy clusters with at least 30 members, almost complete to a redshift of z = 0.2. It was originally compiled by the American astronomer George O. Abell in 1958 using plates from POSS , and extended to the southern hemisphere by Abell, Corwin and Olowin in 1987.
This is a list of NGC objects 6001–7000 from the New General Catalogue (NGC). The astronomical catalogue is composed mainly of star clusters , nebulae , and galaxies . Other objects in the catalogue can be found in the other subpages of the list of NGC objects .
These four near-equals at the core of galaxy cluster CL 0958+4702 are in the process of merging. [149] Galaxy protocluster LBG-2377: z=3.03 This was announced as the most distant galaxy merger ever discovered. It is expected that this proto-cluster of galaxies will merge to form a brightest cluster galaxy, and become the core of a larger galaxy ...
The following are lists of clusters: List of galaxy groups and clusters; List of open clusters; List of globular clusters ... Commons Attribution-ShareAlike 4.0 ...
The following is a list of NGC objects, that is objects listed in the New General Catalogue (NGC). It is one of the largest comprehensive astronomical catalogues for deep sky objects such as star clusters, nebulae, and galaxies. List of NGC objects (1–1000) List of NGC objects (1001–2000) List of NGC objects (2001–3000)
Alter (open star clusters) (for example: Alter 1 at 0:31:56.9 / +63°09'47" in Cassiopeia) (Alter 1 = King 14 = Alter Cluster) Alves / Yun (open star clusters) AM — Arp-Madore catalogue of open and globular star clusters (Halton Arp / Barry F. Madore) (for example: Arp-Madore 1 in Horologium, Arp-Madore 2 in Puppis)
Abell divided the clusters into six "richness groups", depending on the number of galaxies in a given cluster that lie within the magnitude range m 3 to m 3 +2 (the average number of galaxies per cluster for the entire catalog was 64): Group 0: 30–49 galaxies; Group 1: 50–79 galaxies; Group 2: 80–129 galaxies; Group 3: 130–199 galaxies