Perseus cluster


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Perseus cluster

(Abell 426) A rich cluster of galaxies lying about 70 megaparsecs away in the direction of the constellation Perseus. It is the brightest cluster observed in the X-ray waveband. It also contains several strong radio sources, three of which have been identified with the galaxies IC 310, NGC 1265, and NGC 1275. The most intense radio source (3C84A or Perseus A) is associated with the dominant cD galaxy, NGC 1275. This lies at the center of the cluster's cooling flow, which has a mass deposition rate of around 200 solar masses a year (see clusters of galaxies). NGC 1275 shows nuclear continuum activity (it was originally classified as a Seyfert galaxy) and is surrounded by a particularly extensive (up to 40 kiloparsecs in radius) nebula of line-emitting filaments. HST images show it is also surrounded by many globular clusters. Study of the galaxy is complicated by the presence of an intervening disk galaxy, with its own emission-line spectrum, that is falling toward NGC 1275 along the line of sight at 3000 km s–1.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Perseus cluster

[′pər·sē·əs ‚kləs·tər]
(astronomy)
An irregular, diffuse cluster of galaxies centered on the Seyfert galaxy NGC 1275, with redshift z = 0.018
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Esra Bulbul of the Harvard Center for Astrophysics said that what she and her team found in July 2014  "could not be explained by known physics." She was referring to the strange signal that came from the Perseus Cluster - one of the biggest known objects in space today.
The galaxy, which lies 240 million light-years away in the center of the Perseus Cluster, is a dense "red nugget" --although it has twice as many stars as the Milky Way, it's about a quarter of our galaxy's size and filled with old stars that formed early on.
The galaxy lives near the center of the Perseus cluster of over 1,000 galaxies, located 240 million light-years away.
PERSEUS CLUSTER: A mysterious X-ray signal from the Perseus cluster of galaxies, which researchers say cannot be explained by known physics, could be a key clue to the nature of Dark Matter.
Just over 230 million light-years away in the Perseus cluster, the galaxy NGC 1277 formed all of its stars in a quick burst roughly 10 billion years ago--less than 4 billion years after the Big Bang.
In particular, the researchers looked at iron distribution throughout the Perseus cluster, a large grouping of galaxies about 250 million light-years away.
Wyse.: The relationship between the optical Ha filaments and the X-ray emission in the core of the Perseus cluster, MNRAS 344, L48 (2003).
The sound comes from the Perseus Cluster, a clump of galaxies 250million light-years away.
The ancient galaxy resides near the heart of the Perseus cluster, which is home to over 1,000 galaxies, and is located 240 million light years away.