The unusual monster galaxy that existed around 12 billion years ago, An international team of astronomers discovered unusual galactic monsters that existed around 12 billion years ago when the universe was only 1.8 billion years old.

The galaxy named XMM-2599 forms high-speed stars and then dies. Why it suddenly stops forming stars is not clear. Even before the universe was 2 billion years old, XMM-2599 had formed a mass of more than 300 billion suns, making it an ultra-massive galaxy, the researchers said.

Even more extraordinary, we show that XMM-2599 formed most of its stars in great anger when the universe was less than 1 billion years old and then only 1.8 billion years when the universe became inactive. now the team of astronomers discovered unusual monster galaxy that existed around 12 billion years ago.

The team used spectroscopic observations from the strong M. M. Keck multi-objective spectrograph for infrared or MOSFIRE to take detailed XMM-2599 measurements and accurately measure their distances.

Very few galaxies stop forming stars during this time, and none are as big as XMM-2599. The existence of ultra-massive galaxies such as the XMM-2599 is quite challenging for numerical models.

Although such massive galaxies are very rare in this era, they predict models.

However, projected galaxies are expected to actively form stars.

What makes the XMM-2599 so interesting, unusual and surprising is that it no longer emits stars, perhaps because it runs out of fuel or its black holes start to glow. “Our results require a change in the way the model overrides the formation of stars in early galaxies,” the researchers said.The unusual monster galaxy that existed around 12 billion years ago.

The research team found that XMM-2599 produces more than 1,000 solar masses per year in stars at the peak of its activity – very high star formation speeds. The Milky Way, on the other hand, forms a new star every year.

“XMM-2599 may be descended from a population of star-shaped dust galaxies in the earliest universe that recently discovered a new infrared telescope,” the researchers said.

We caught XMM-2599 in the inactive phase. We don’t know what will happen today. We know that he cannot lose mass.

Perhaps XMM-2599 will be a central member of one of the brightest and most massive galaxy clusters in the local universe in the next 11.7 billion years of space history.

Or, it can continue to exist in isolation. Or we can have a scenario that lies between these two results. said the researcher.

The team was given more time at the Keck Observatory to answer the unanswered questions raised by XMM-2599. “We identified XMM-2599 as an attractive pure image candidate,” said researcher .

We use Keck to better characterize and validate his character and to understand how galactic monsters form and die. MOSFIRE is one of the most effective and efficient tools in the world for this type of research.

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