With new discoveries taking place everyday, a group of astronomers from the United States have discovered 854 “ultra dark galaxies”.
These galaxies were discovered in the Coma Cluster, which is known to have galaxy clusters and contains thousands of galaxies.
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What are ultra-dark galaxies?
The ultra-dark galaxies are similar in size to the Milky Way, but have only 1/1,000 of stars that our galaxy does.
The stellar population within such fluffy extended galaxies is subject to rapid disruption due to a strong tidal force detected within the cluster.
The Coma Cluster is around 320 light years away from the earth, and the discovery was made with the help of Subaru Telescope.
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The astronomers claim that the darkness of these galaxies is because of mysterious dark matter.
Researchers also claimed that less than 1 percent of the galaxies matter was visible, which is quite less when compared to other parts of the universe.
“They are a passively evolving population, lying along the red sequence in the color-magnitude diagram with no signature of H-alpha emission. Star formation was, therefore, quenched in the past,” the astronomers said.
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Dr Koda, lead author on the study accepted for publication in the Astrophysical Journal Letters said “Not only these galaxies appear very diffuse, but they are very likely enveloped by something very massive”.
The astronomers also claimed that the galaxies lost the gas needed to create new stars during their formation period nearly billions of years ago.
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