24th January, 2020
Astronomers have detected a large amount of oxygen in the atmosphere of one of the oldest and fundamentally weaker stars. It is a discovery that throws light on the formation of important compounds necessary to sustain life in the universe. At the same time, it has further strengthened the possibilities of life on other celestial bodies of space. For this study published in the journal Astrophysical Letters, the researchers analyzed the chemical composition of an ancient star named J0815 plus 4729 and discovered how oxygen and other important elements formed in the first generation stars in the universe. it happens.
5000 light-years away are present
Researchers at Cambridge University, UK, among the researchers said, "The star named J0815 plus 4729 is about 5000 light-years away from its constellation 'Lynx' which means it will take five thousand years for light to reach Earth from this stellar source."
Hope for life in other stars
America's W. John O. Maria, a scientist at the M. Keek Observatory and co-author of this study, said, 'This result is very exciting. It tells of the earliest time of the universe using the stars present in our cosmic back yard. ' He said that getting oxygen in 'J0815 plus 4729' meant that life could be possible in other wires as well.
Gases produced due to nuclear reaction
According to researchers, oxygen is the third most abundant element in the universe after hydrogen and helium and is essential for all forms of life on Earth. However, he said, this element was not present in the early universe. They were created through the emission of ultrahigh-energy, which is about 10 times larger than the Sun when a nuclear reaction occurs inside the massive stars.
16 chemicals data collected
After observing the star for more than five hours in a single night, astronomers collected data for 16 other chemicals including oxygen in its atmosphere. The lead author of this study, Joan Gonzalez Hernández, stated, 'The structure of this star indicates that it was formed during the hundreds of millions of years after the Big Bang. Probably it will be made of material emanating from the first supernova of the Milky Way. The findings of this study also suggest that this star had a very unusual chemical composition.
There is no such star in the galaxy
According to the scientists, the amount of carbon, nitrogen, and oxygen in this star called J0815 plus 4729 is 10, eight and three percent respectively. The sun also has a similar situation. However, he said that other elements like calcium and iron were extremely rare in it. David Eguodo, a postdoctoral researcher at the US University of Cambridge and co-author of this study, said, "Only a few stars are found in the halo of our galaxy, but no one has such huge amounts of carbon, nitrogen, and oxygen."
Category: Science and Technology