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By TechThop Team
Posted on: 12 Aug, 2022
Astronomers from the University of Surrey have discovered an extremely faint dwarf galaxy that they believe to be packed with an extremely old star. The Pegasus V galaxy, also known as Andromeda V, is near the nearby Andromeda galaxy.
An observation of the dwarf galaxy was first made by a sky watcher named Giuseppe Donatiello through archives of dark energy cameras designed by the US Department of Energy.
A Gemini North telescope at Hawaii's International Gemini Observatory was used to study Giuseppe's find. The study found small amounts of heavy elements in Pegasus V, which suggests the galaxy has a very old age.
There is a new, extremely faint galaxy whose stars formed very early in the history of the universe.
The discovery marks the first time this faint galaxy has been found using an astronomical survey that wasn't designed specifically for the task, according to lead author Dr. Michelle Collins.
The discovery of faint galaxies is generally difficult for astronomers. There is a reason for this: their stars are older and less scintillating.
A galaxy's distance can be measured and identified by its stars. As a result, faint galaxies can be hard to locate due to the scarcity of bright stars. Putting Pegasus V on the map was made possible by the Gemini telescope.
As compared to other faint galaxies, the 'fossil' galaxy contains a large number of old stars. Two of these facts indicate that the galaxy is ancient and star formation in it ceased very early.
A galactic relic may contain clues about how stars formed in the early universe and may improve our understanding of dark matter.
Physicists believe dark matter constitutes the fabric of the universe itself. It is not visible to telescopes or lenses because it is not visible to the naked eye.
Objects around it are affected by it, which establishes its existence. Researchers hope Pegasus V, an object from the reionization period, will shed light on the formation of the universe, which will help them understand dark matter better.
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