For the first time, astronomers have spotted evidence of a pair of dwarf galaxies featuring giant black holes on a collision course with each other.
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It appears that the Abell 133 merger is much further along – so much so that it only has one nickname, Mirabilis. That's after theknown for its very long tail, in reference to the long tail observed around this pair of galaxies, caused by the collision. As for Abell 1758S, the dwarf galaxies aren't joined up to the same extent, and get two nicknames: Elstir and Vinteuil . It appears that these galaxies and their black holes are currently linked by a bridge of stars and gas, and haven't merged to the same extent.
"Using these systems as analogs for ones in the early Universe, we can drill down into questions about the first galaxies, their black holes, and star formation the collisions caused,"Over billions of years, these smaller, colliding galaxies are thought to have combined into the larger galaxies that dominate the Universe now.
France Dernières Nouvelles, France Actualités
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