Comments about Astronomers found a record-holder star, as ancient as the Universe

Astronomers found a record-holder star, as ancient as the Universe



Astronomers from the Australian National university found in 35,000 light years from Earth a star which can be considered the oldest of known to us.

At an object with SMSS J160540.18-144323.1 index the small content of iron is insignificant, approximately in 1.5 million times it is less that in our Sun.

It means that this space body with high probability belongs to the second generation of stars whose age is only a little less, than at the Universe.

The method of determination of "age" of stars on the content of iron is based on our idea of emergence of chemical elements.

Initially, right after the Big Bang, the first generation of stars – huge, massive and very short-lived "nuclear ovens" with fuel was formed of light atoms of hydrogen and helium.

Then, in the course of nuclear fusion of a kernel of their atoms merged, forming heavier elements, including also iron.

When the star perished and turned into supernew, explosion threw out these particles of iron in space where later together with other dust they became a basis of new stars.

Thus, a large amount of iron means that the star is young, to tell it so much "construction material" the set of other stars earlier had to arise and die.

And vice versa – by such technique our young Sun is approximately in 100 000th generation from the Big Bang.

At object SMSS J160540.18-144323.1 the content of iron [Fe/H] = –6.2 ± 0.2 that it is possible to compare to a water drop in the Olympic pool.

And it allows to draw a conclusion that these remains – result of explosion of a star of the very first generation which could not make more.

Means, the age of the found "old woman" on only several hundreds of millions of years is less, than the Universe which today 13.8 billion years.

And this star long-liver dies – astronomers established that it is the red dwarf who already spent all the hydrogen.

And it means that the old resident of space soon will not become and it is necessary to hurry to learn as much as possible it secrets.



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