Her age determines the metal content.
Astronomers at Monash University in Australia have discovered in the galaxy the dairy star whose age reached 13.5 billion years. This object appeared about 300 million years after the Great Burst.
This is written by Chronicle.info regarding rambler.ru.
According to scientists, 2MASS J18082002-5104378 B can be one of the oldest stars in the universe. Her age is determined by the concentration of metal in it almost none. Metals and other elements weighed down from hydrogen were discharged into interstellar media, with the death of the first stars, and every new generation increased the metallicity of the stars. According to estimates, the metal concentration in 2MASS J18082002-5104378 B is about 10 times smaller than that of the Earth.
The presence of such dairy stars suggests that the galaxy is older than 3-5 billion years earlier than previously thought. In addition, its mass is only 10 percent of the mass of the Sun, which is a lower limit for hydrogen firing.
According to scientists, this means that the first stars in the universe were probably not supermassive, and were formed from a small amount of material. This small size allows her to live for at least tens of billions of years.