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 stars. 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 The Astrophysical Journal.
A party that ended abruptly
At their 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 press release of the study, University of California, Gillian Wilson, Professor of physics and astronomy, believes that the existence of ultramassive galaxies 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 mystery of this super giant galaxies lies in the fact 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.
Some astronomers suggest that the formation of stars in massive galaxies may be terminated due to the outflow of gas and dust from a supermassive black hole in 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 — as you know, 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.