Astronomers who use the Webb Space Telescope have discovered the most distant, and therefore discovered the earliest, massive dead galaxy in the universe, called Rubies-UDS-QG-Z7.
This finding reveals that galaxies can get mass quickly and just as quickly “die” “die” much earlier in the history of the universe than astronomers thought. The Discovery, published in the Astrophysical Journal and reported by Live ScienceExisting models of the evolution of the Melkweg challenges.
Dead galaxies, often called ‘red and death’, are those where the formation of new stars has stopped. These galaxies contain many old, small red stars and miss young, massive blue stars.
The Galaxy Rubies-UDS-QG-Z7, the most distant dead galaxy, could lightly broadcast that we have traveled to us for more than 13 billion years. This means that astronomers observe it, because it seemed only 700 million years after the big bang, now 13.8 billion years old in a universe. It is the first massive dead galaxy identified in the early universe.
This discovery leads to a re -evaluation of the evolution models of the Melkweg and the wider history of the universe. Observations indicate that some galaxies do not form more than previously predicted new stars than the current models, which suggests that processes for the development of the Milky Way and star formation must reconsider.
Typically needed galaxies for several billion years to become massive and another more billion years to get dead, according to previously scientific understanding.
Earlier, astronomers who used the WebB spacecraft had found dead galaxies that already exist 1.2 billion years after the big bang. However, the discovery of Rubies-UDS-QG-Z7 shows that some galaxies have not stopped forming stars much earlier than expected.
Astronomers remain uncertain about how certain galaxies can get a considerable mass so quickly and then stop the star formation abruptly.
In particular, although Rubies-UDS-QG-Z7 was already dead, many other galaxies in the early universe still grew active and they formed stars in the same period, astronomers notice.
Scientific calculations suggest that dead galaxies in the early universe should have been rare, but further observations can reveal more of such objects. The unexpected discovery of this record -breaking Galaxy indicates that many mysteries remain unsolved.
