A Distant Galaxy Ate All of its Friends. Now It's All Alone universetoday storybywill
“The question is, what happened to all of these galaxies? We think the gravitational pull of the one large galaxy combined with interactions between the galaxies was too strong, and they merged with the large galaxy. For these galaxies, apparently, resistance was futile.”
While the authors cannot rule out the possibility of dwarf galaxies located around 3C 297, their presence would still not explain why no larger galaxies are nearby. In addition, they anticipate that 3C 297 will spend several billion years on its own before it gains any large galactic companions . While it is not clear how 3C 297 ended up on its own in a cluster-like environment, the team theorizes that it could be a “fossil group” – the end stage of a galaxy merging with several others.
While many other fossil groups have been detected before, at 9.2 billion light-years distant, this one is the most distant ever seen. The previous record holders for fossil groups were 4.9 and 7.9 billion light-years away . “It may be challenging to explain how the universe can create this system only 4.6 billion years after the Big Bang,” said co-author Mischa Schirmer of the MPIA.
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