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The origin of the formation of one of the building blocks of man was discovered in the early universe

A new discovery by cosmologists sheds light on how fluoride, which is found in bones and teeth as fluoride, is formed in the universe. Using the Atacama Large Millimeter Array (ALMA), a team of astronomers has discovered the element "Fluorine" in a galaxy 12 billion light-years away. <"We all know about fluoride because the toothpaste we use every day is java fluoride," said Maximilien Franco of the University of Hertfordshire in the UK and lead author of the new study.

Like many Elements around us, fluoride is formed inside stars, but until now we did not know exactly how this element is produced, and it was not even clear which type of stars produce the most fluoride in the universe.

Franco and his colleagues The shape of "Hydrogen Fluoride" in large distant galactic gas clouds called NGP-190387 mesh They have donated. The image of this galaxy shows a period when the universe was only 1.4 billion years old; That's about 10 percent of the current age, estimated at 13.8 billion years. Fluorine-forming stars must have lived and died quickly.

The team believes that Wolf-Rayet stars are very massive stars with more than 20 times the masses. The mass of the sun, which lasts only a few million years and is the size of a blink of an eye in the history of the universe, is the most likely place for the production of fluoride. Gives. Wolf-Ray stars have previously been suggested as possible sources of cosmic fluoride, but it was not clear how important these stars were in early fluorine production.

BingMag.com The origin of the formation of one of the building blocks of man was discovered in the early universe

Graphic design of the core of a Wolf-Ray star
Credit: ESO/L. "We have shown that Wolf-Ray stars, which are one of the most massive stars known and can explode at the end of their life, produce fluoride and help us in some way," said Calada. To keep our teeth healthy.

In addition to these stars, there have been other scenarios for how fluoride is produced and excreted in the past. One example involves the pulsation of giant stars that evolved into masses up to several times the size of our Sun, which are called "Asymptotic Giant Branch" stars. But Tim believes that these scenarios, some of which are billions of years old, may not fully explain the amount of fluoride in NGP-190387.

"Chiaki Kobayashi" University Professor "It only took tens or hundreds of millions of years for this galaxy to produce levels of fluoride comparable to that found in the stars of the 13.5 billion-year-old Milky Way galaxy," Hertfordshire said. "This was a completely unexpected result, and so our measurement suggests a new constraint on the origin of fluoride that has been studied for two decades." One of the first discoveries of fluoride is beyond the Milky Way and adjacent galaxies. Astronomers have previously observed this element in distant quasars, bright objects fed by massive black holes at the center of some galaxies. But the element had never been observed in a star galaxy in the early universe before. NGP-190387, first discovered by the European Space Agency's Herschel Space Telescope and then observed by Chile-based Alma Telescopes, is very bright at a distance.

It is partly created by another massive galaxy located between NGP-190387 and Earth because the central galaxy, in the position of a gravitational lens, magnifies and amplifies the light of a distant galaxy, causing astronomers to faint fluorine radiation from billions of years ago. Future studies of NGP-190387 with the Ultra-Large Telescope (ELT) under construction in Chile could reveal more secrets about the galaxy. According to Chentao Yang of the Southern European Observatory, Alma is sensitive to interstellar gas and dust radiation, but with ELT, even NGP-190387 can be observed through direct starlight and provide important information about the galaxy's stellar content.

Cover photo: Graphic design of the distant galaxy NGP-190387
Credit: ESO/M. Kornmesser


Source: Phys.Org

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