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Abell 2029 or A2029 is a large and relaxed cluster of galaxies 315 megaparsecs (1.027 billion light-years) away in the constellation Virgo. [5] A2029 is a Bautz–Morgan classification type I cluster due to its large central galaxy, IC 1101. Abell 2029 has a diameter of 5.8–8 million light-years. This type of galaxy is called a cD-type ...
IC 1101 is a class S0 supergiant ( cD) lenticular galaxy at the center of the Abell 2029 galaxy cluster. It has an isophotal diameter at about 123.65 to 169.61 kiloparsecs (400,000 to 550,000 light-years). It possesses a diffuse core which is the largest known core of any galaxy to date, [5] and contains a supermassive black hole, one of the ...
List of Abell clusters. 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.
A type I cluster is dominated by a bright, large, supermassive cD galaxy; for example Abell 2029 and Abell 2199. A type II cluster contains elliptical galaxies whose brightness relative to the cluster is intermediate to that of type I and type III. The Coma Cluster is an example of a type II.
The Abell catalog of rich clusters of galaxies is an all-sky catalog of 4,073 rich galaxy clusters of nominal redshift z ≤ 0.2. This catalog supplements a revision of George O. Abell 's original "Northern Survey" of 1958, which had only 2,712 clusters, with a further 1,361 clusters – the "Southern Survey" of 1989, published after Abell's ...
Type-cD galaxy. ESO 383-76 within the Abell 3571 cluster, imaged by Dark Energy Spectroscopic Instrument in 2019. The type-cD galaxy [1] (also cD-type galaxy, [2] cD galaxy [3]) is a galaxy morphology classification, a subtype of type-D giant elliptical galaxy. Characterized by a large halo of stars, [4] they can be found near the centres of ...
The Abell catalogue is a catalogue of galaxy clusters compiled by George O. Abell. Help keep this category in order, modify [[Category:Abell objects]] to [[Category:Abell objects|####]] , dropping the Abell or ACO prefix, using only the number, on pages that categorize here.
Abell 1689 is a galaxy cluster in the constellation Virgo over 2.3 billion light-years away. Details [ edit ] Abell 1689 is one of the biggest and most massive galaxy clusters known and acts as a gravitational lens , distorting the images of galaxies that lie behind it. [4]