Our discovery suggests that the earliest galaxies in the Universe contained much more dark
In the past, we assumed that we were seeing extremely faint and small objects that existed in the first epochs of the universe's life.In fact, they were much more impressive in size and mass than us.Anna Froebel, Assistant Professor, MIT
American astrophysicists from the Massachusetts Institute of Technology (MIT), together with colleagues from the UK and Australia, have discovered several stars on the edge of Tucan II that are extremely distant from thecenter, and yet in the gravitational pull of the tiny galaxy.
Astronomers clarify that they have found stars thatbelong to the indicated galaxy, but are too far from its center. They, as specified, are influenced by the gravity of the galaxy, the mass of which, according to the latest estimates, is 3-5 times greater than scientists initially assumed.
The unique configuration suggeststhat the ancient galaxy may have been the product of one of the first mergers in the universe between two young galaxies - one slightly less primitive than the other.
The team used an image filter ontelescope to detect primitive, metal-poor stars outside the galactic core. The team used an algorithm developed by Chiti to efficiently isolate low-metal stars, including previously identified stars in the center and nine new stars much further from the galaxy's core.
According to the researchers, with such a configuration of stars, Toucan II should have a dark matter halo, which is 3-5 times more massive than previously assumed.
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