Abell 2255
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| Abell 2255 | |
|---|---|
Images of various galaxies belonging to Abell 2255. The Beaver galaxy (top left), the Goldfish galaxy (top right) and the Original TRG (bottom). | |
| Observation data (Epoch J2000) | |
| Constellation | Draco |
| Number of galaxies | 300-500 |
| Redshift | 0.0806 |
| Distance | Z=0.0806 |
| Notable features | Chaotic intracluster medium and Original TRG galaxy |
| Other designations | |
| A2255 | |
Abell 2255 (often shortened to A2255) is a rich galaxy cluster located at a relatively nearby distance of redshift z=0.0806 in the Constellation of Draco. It contains some 300-500 galaxies. It has a radius that spans 16.3 million light years. The cluster contains a dense environment with a chaotic intracluster medium (ICM) that contains shocks, turbulent filaments, intense magnetic fields and other phenomenon.[1]
X-ray observations of the temperature asymmetries of the clusters intracluster medium (ICM) from XMM-newton indicate that it had recently gone through a merger event with another galaxy cluster around 0.15 billion years ago.[2]