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20 relations: Abell catalogue, Centaurus, Chandra X-ray Observatory, Electronvolt, Elliptical galaxy, Erg, Galaxy, Hydra Cluster, Hydra-Centaurus Supercluster, Intracluster medium, Kelvin, Light-year, List of Abell clusters, Minute and second of arc, NGC 4696, NGC 4709, Observable universe, Solar mass, X-ray, X-ray astronomy.
Abell catalogue
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.
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Centaurus
Centaurus is a bright constellation in the southern sky.
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Chandra X-ray Observatory
The Chandra X-ray Observatory (CXO), previously known as the Advanced X-ray Astrophysics Facility (AXAF), is a Flagship-class space observatory launched on STS-93 by NASA on July 23, 1999.
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Electronvolt
In physics, the electronvolt (symbol eV, also written electron-volt and electron volt) is a unit of energy equal to approximately joules (symbol J).
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Elliptical galaxy
An elliptical galaxy is a type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless image.
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Erg
The erg is a unit of energy and work equal to 10−7 joules.
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Galaxy
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
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Hydra Cluster
The Hydra Cluster (or Abell 1060) is a galaxy cluster that contains 157 bright galaxies, appearing in the constellation Hydra.
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Hydra-Centaurus Supercluster
The Hydra-Centaurus Supercluster (SCl 128), or the Hydra and Centaurus Superclusters, is a supercluster in two parts, the closest neighbour of Virgo Supercluster.
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Intracluster medium
In astronomy, the intracluster medium (ICM) is the superheated plasma that permeates a galaxy cluster.
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Kelvin
The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.
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Light-year
The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.
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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.
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Minute and second of arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
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NGC 4696
NGC 4696 is an elliptical galaxy.
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NGC 4709
NGC 4709 is an elliptical galaxy located in the constellation Centaurus.
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Observable universe
The observable universe is a spherical region of the Universe comprising all matter that can be observed from Earth at the present time, because electromagnetic radiation from these objects has had time to reach Earth since the beginning of the cosmological expansion.
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Solar mass
The solar mass is a standard unit of mass in astronomy, equal to approximately.
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X-ray
X-rays make up X-radiation, a form of electromagnetic radiation.
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X-ray astronomy
X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects.
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A3526, Abell 3526, Cen Cluster, Centaurus cluster.
