Giant galaxy age of 12 billion years suddenly went out, and scientists don't know why
Source:XMM-2599 began as zvezdoobrazovaniya dusty massive galaxy in the early Universe
The Titles of many of the world's media every day are full of reports about the mysterious death of a giant galaxy that has puzzled astronomers. The galaxy, known as XMM-2599 went out, shot it down with scientists confused. Researchers estimate the age of this giant monster in 12 billion years. This means that when the Universe was one billion years, the galaxy has formed a large number of . However, after eight million years, the process of star formation in the galaxy suddenly stopped. As noted in their work the researchers, for the galaxy, lots of stars which exceeds the mass of 300 billion suns, that's very unusual. A study published in the journal .
Party, which ended abruptly
At its peak galaxy monster XMM-2599 was born more than 1,000 solar masses per year. For comparison, the milky Way produces about one new star per year. An international team of astronomers, led by scientists from the University of California riverside were able to conduct detailed measurements and calculate the distance using powerful spectroscopic equipment for observations located in the Observatory of Mauna Kea in Hawaii. As reported in the studies of the University of California, Gillian Wilson, Professor of physics and astronomy, believes that the existence of ultramassive is challenging for numerical models.
It is believed that young massive stars in galaxies, such as XMM-2599, was to cease to be formed when the age of the galaxies has reached about three billion years. Instead, at the age of only 1.8 billion years in the XMM-2599 began the process of star formation. The researchers note that the main excess of this giant galaxy is that it no longer forms stars. At some point, HMM-2599 was the perfect place for the birth of new stars, but then something happened. This discovery is contrary to the knowledge of scientists about how galaxies are formed.
This set of images shows possible evolution of the XMM-2599 from massive dusty galaxies forming stars (left) until the red inactive galaxies (center), and then, perhaps becoming a galaxy with bright clusters (right)
Some astronomers suggest that the formation of stars in massive galaxies may be terminated due to the outflow of gas and dust from the supermassive at the center. But for this to be possible, the black hole at the galactic center should be not only incredible in size, but formed in a very short period of time — known for the growth of black holes takes time. Anyway, the researchers hope that further observations using a large telescope in Atacama Chile can shed some light on the mystery of HMM-2599. The researchers also intend to use the telescope James Webb, which will launch in 2021.
Where did the life on Earth?
Lead authors of the study believe that the study of galaxies gradually brings us closer to the answer to the question about how all galaxies are here and how life first appeared. The process of origination of life on our planet remains a mystery. However, gradually the results of studies that shed light on the basic chemical elements necessary for the origin of life. So, phosphorus is found in all living creatures on Earth. Recently, scientists have tracked the phosphorus in the Solar system, studying the ways of getting to our planet. So scientists managed to find out how it formed a molecule containing phosphorus. Read more about this amazing discovery, read our .
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