Legacy Astronomical Images > Galaxies Series > Cluster Galaxies Unit

Description

Clusters of galaxies are groups of galaxies that are gravitationally attracted to one another. Clusters may come in small groups of a dozen to two dozen members, such as the Local Group which includes the Milky Way and the Andromeda galaxy. Larger clusters of galaxies can contain several thousand members. On even larger scales, galaxy superclusters may exist, containing about a hundred clusters of galaxies.

Collection Items

VLA-COSMOS Survey
Description: The Cosmic Evolution Survey (COSMOS) is a pan-chromatics (X-ray to mm) observational project to perform a detailed study of galaxy and super-massive black hole evolution through cosmic times, with particular emphasis on the influence of environment…

Neutral Hydrogen & Infrared Probes of Star Fomation
Description: Image of Hickson Compact Group 7 depicting neutral hydrogen gas (red) from the VLA and infrared observations from the IRAC instrument on the Spitzer Space Telescope (blue and green). Neutral hydrogen gas tells astronomers about the distribution of…

Virgo, A Laboratory for Studying Galaxy Evolution
Description: Galaxies evolve over time, some lose gas, some accrete, some merge and some just run out of gas. The environment may affect the evolution of galaxies. In this picture we show what the cluster environment might do to the gas in galaxies. The image…

Dance of the Radio Galaxies
Description: Four radio galaxies perform a complicated dance in the heart of Abell 2255, a rich cluster of galaxies in the throes of a cluster-cluster merger. The optical image, collected at Kitt Peak National Observatory, is displayed in blue and reveals…

Virgo Cluster of Galaxies
Description: A composite of X-ray (blue) emission from the core of the Virgo Cluster as observed with the IPC of the Einstein Observatory and total hydrogen maps of the 10 brightest spirals as observed with the VLA in its most compact D-array configuration (red…

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