Tuesday , March 2 2021

He found the incredible star in the Milky Way



Scientists can not explain the ancient age of a star older than the Milky Way

The star is 13.5 billion years old. Photo: BBC.com

The star is 13.5 billion years old. Photo: BBC.com

Astronomers at the Australian National University said they found one of the oldest stars in the universe. And it is very close – just 407 light years from Earth, meaning it is inside the Milky Way galaxy.

The star is in the star formation region of Rho Ophiuchus, and its age is 13.5 billion years old – this is the oldest star in our galaxy. That means that it is only 300 million years younger than the Universe itself.

the_flying_saucer_protoplanetary_disc_around_2mass_j16281370-2431391 "width =" 100%

Protoplanetar disk surrounding the 2MASS J16281370-2431391

Photo: Wikipedia

The name 2MASS J18082002-5104378 B was found. At this time, it remained unnoticed because of its small size and dullness. It is possible to detect an ancient star just because of the presence of a bright star of larger size escorts with the protoplanetary disk.

The mass of 2MASS J18082002-5104378 is only 10% of the mass of the Sun, and the amount of metal in it is 10% of all metals on Earth. Astrophysicist Andrew Casey, who participated in the study, admitted that they had never discovered a star with such a small mass and a small amount of metal.

"Such stars are extremely rare – the process of their search is like searching for a needle in a haystack, but thanks to the huge amount of data collected on telescopes on land and space, we are closer than ever to figure out how stars in the early universe were born," commented the astrophysicist Andrew Casey.

This discovery allows you to look at the formation of stars in the universe from different angles. Since one of the oldest stars is on the thin disk of the Milky Way, the question of the age of our galaxy is revealed again. Maybe he is much older than he thought before.

Remember before in the Solar System they discovered objects from the world of the deadas well as astronomers the most complex image of the center of the Milky Way.

source:
Hi-News


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