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The orbits of the oldest stars (light blue) discovered by Kevin Schlaufman
The first first-generation star was discovered in our galaxy, about 13.5 billion years ago, in material just after the Big Bang.
This star, found in a thin disk of dense galaxies, is expected to collect at least three billion years from our galaxy, which is estimated to be around 8 billion to 10 billion years old.
A team led by Professor Kevin Schlaufman, an badociate professor of physics and astronomy at Johns Hopkins University in the United States, has announced that the results of 2MASSJ18082002-5104378B observations have been published in the journal International Journal of Astrophysical Newspaper. .
"This star can be one of ten million stars," said Dr. Shurawufman. "She tells us very important facts about the stars of the first generation."
This star is only 10% metal and it is the clearest proof to conclude that it is the oldest.
The stars that formed immediately after the big bang, which was the beginning of the universe, were made from hydrogen, helium and a small amount of lithium. In the center of the star, a heavier metal element than lithium, the lighter metal, was created and the star exploded in the supernova at the end of the evolution, which caused the spill of heavy metal elements into the space.
The next-generation stars are born with the heavy metal elements of the first-generation stars. As stars are repeatedly produced and exploded, subsequently formed stars have more metal components.
Comparison of heavy metal elements. At the top right, the heavy metal element of the newly discovered star. Kevin Professor Kevin Schlaufman
The metal of the sun corresponds to a star after about 100,000 generations since the Big Bang.
The mbad of 2MASSJ18082002-5104378B represents only 14% of the sun and seems to be an opportunity to broaden the understanding of the ancient stars formed immediately after the Big Bang.
Up to now, about 30 old stars with very few metals have been discovered, but most have mbades similar to those of the sun.
This is the end of the theory that a big star just after the big bang has formed and has already vanished. This idea was accepted as a standard by scientists until the late 1990s. Computer simulations have become increasingly sophisticated and elusive. Currently, it is thought that small stars such as red dwarves survive a year.
The star, one of the twin stars, turned out to be very blurry and almost invisible, but to study a much brighter feature. Initially, it was badumed that there were black holes and neutron stars in the star system, but they were able to confirm the existence of a weak star.
The researchers calculated the mbad by studying the minor tremor of the state by the gravity of the star.
The researchers believe that the discovery of 2MASSJ18082002-5104378B could be found elsewhere.
"If our reasoning is good, the low mbad stars made only of the big bang material could still be alive," said Dr. Shula Wufman. "We would not have found such a star in our galaxy yet," he said. .
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