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NASA: Astronomers have found 780 dwarf galaxies

NASA: Астрономы обнаружили 780 карликовых галактик These galaxies appeared at a time when the Universe was two to six billion years.

An international team of astronomers have discovered many dwarf galaxies, which researchers hope to learn about the processes that occurred in the Universe billions of years ago.

The research results were published in the Astrophysical journal.

Researchers using the Hubble telescope took a picture of three large clusters of galaxies that act as gravitational lenses. Analysis of curved their emission allowed the researchers to obtain a sample of 780 dwarf galaxies with absolute stellar magnitude in the ultraviolet range is 12.5 less (average luminosity galaxies have bolometric absolute magnitudes from -17 to -15) . These galaxies appeared at a time when the Universe was two to six billion years.

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All dwarf galaxies were 10-100 times fainter than previously discovered galaxies of the same age. Calculations researchers show that despite its “paleness” that such galaxies produce more than half of the ultraviolet radiation at that time.

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