Besides being illuminated by the Big Bang that caused the biggest flash of light ever, the Universe was a completely dark place until it was about 100 million years old. The first stars began to ignite at that age of the Universe, and any data gathered about those cosmic objects could reveal precious info about your existence.
Those first stars appeared from the primordial gases of hydrogen, helium, as well as light metals. Gen Chiaki, who is the lead author of a new study and also a post-doctoral researcher in the Center for Relativistic Astrophysics, declared:
“We can get results from indirect measurements to get the mass distribution of metal-free stars from the elemental abundances of metal-poor stars,”
The new simulations showed the carbonaceous grains as they were seeding the fragmentation of the gas cloud produced. This leads to the formation of low-mass ‘giga-metal-poor’ stars that could still be in the Universe at the moment.
Low iron content for the stars
Gen Chiaki also declared:
“We find that these stars have very low iron content compared to the observed carbon-enhanced stars with billionths of the solar abundance of iron. However, we can see the fragmentation of the clouds of gas. This indicates that the low mass stars form in a low iron abundance regime. Such stars have never been observed yet. Our study gives us theoretical insight of the formation of first stars,”
However, the scientists admit that they cannot see the very first stars that illuminated the Cosmos. But by looking at some stars from the early Universe, important data results, as those cosmic objects, “have the fingerprints of the first stars all over them through the chemicals that were produced in the supernova from the first stars.”
The new findings were published in the Monthly Notices of the Royal Astronomical Society.