Found the poorest star-dwarf galaxy of metal

Found the poorest star-dwarf galaxy of metal

With the help of the Big Binocular Telescope (BBT), scientists were able to find out that the star-forming galaxy J0811 + 4730 is the poorest of the dwarf-type metals.

Metal stellar galaxies are considered the best local analogs of the dwarf type with a high redshift. They played an important role in the reionization of space. Such formations are located close, so they are easy to study.

Found the poorest star-dwarf galaxy of metal

BBT Spectrum J0811 + 4730

For the first time J0811 + 4730 discovered in 2016. Immediately noted its low metallicity, redshift - 0.04, and the value reached -15.41. Stars appeared with a rate of 0.48 solar masses per year. New observations of the spectroscope from Ukrainian scientists have shown that the metallicity level is even lower. We used the BBT tool for the study and analyzed J0811 + 4730 in February 2017.

The team determined the amount of oxygen and revealed that it is extremely small. Scientists cannot yet explain this bias. But it is believed that this is due to the increased brightness of the galaxy, or it is chemically unresolved formation with a short history of star birth. Even the gas from the galactic halo can affect.

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