Unusual star will help to shed light on the main mystery of the Universe – the secret of her birth
The star was not carbon footprint
Scientists from Cambridge University have discovered an ancient star in the halo of our milky Way galaxy. At first glance, the star J0023+0307 unremarkable. However, after examining the object more closely, a team of astronomers has discovered the shocking properties of the stars – she was not the carbon footprint. The research of scientists published in the journal Astrophysical Journal Letters.
It’s so unusual that the scientists who investigated said that such a luminary simply should not exist. Object J0023+0307 formed in the first 300 million years after the Big Bang – immediately after beginning to die the very first generation of stars. And here it gets weird.
Artistic representation of an unusual star J0023+0307
“This ancient star is not only completely missing the carbon, but also the high lithium content. And it is possible that this lithium is related to lithium primary, which was formed after the Big Bang,” — says astronomer David Aguado from the University of Cambridge.
When about 13.8 billion years ago the universe was formed naturally formed only the very lightest elements. Among them hydrogen and helium, and very small amount of lithium and beryllium. The process by which these elements are formed from the primary sea of neutrons, protons, electrons, positrons, photons and neutrinos, is called “Big Bang nucleosynthesis”.
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Heavy elements in turn came later, stormwaves inside the first stars under the influence of enormous pressure and temperature. When the first generation of stars began to die, these elements were thrown out into the outer space and captured by the new clusters of young stars. This fact allows astronomers to accurately determine the age of a particular star.
For example, if the star contains a large number of heavy elements (stars with low metal content or EMP), it is a clear indication that luminary were formed at those times when the Universe simply did not exist for these substances. The study J0023 + 0307 showed that it contains iron a thousand times smaller than our Sun, making it one of the stars with the lowest iron content among the famous stars. Despite this fact, the lithium it contains approximately as much, how many contains other related stars. And that’s very unusual.
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In ordinary stars, where required for the synthesis of hydrogen temperature in the core reaches a 2.5 million degrees, Li were simply destroyed. There have been cases when larger stars some stock lithium remained within the colder, outer atmosphere of the star. But in a small, hot star, lithium has never met.
The researchers make the assumption that the temperature of the ancient stars with low metal content is lower than in the younger. It is possible that J0023+0307 contains lithium, which was formed in the process of nucleosynthesis the Big Bang. If this assumption is correct, then future research in this direction will shed light on the main mystery of the Universe – the mystery of her appearance.
See also the story of how to make money on space debris:
We will remind that earlier exploded closest to the Sun is a star. Scientists have also seen in deep space is a fantastic sight – the explosion of a star “live”.
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