Rare group of dwarf galaxies discovered

by times news cr

Astronomers ⁤from ⁤Yonsei University in Seoul, South ‌Korea, ⁢adn other scientific institutions have discovered a rare group of‌ five star-forming dwarf galaxies in ​the local universe.

dwarf galaxies are low-mass, low-luminosity star systems typically​ containing​ several billion stars. Groupings of such galaxies are​ extremely rare, according ‌to⁣ observational⁢ data, and⁣ the ⁤probability ⁣that‍ a dwarf galaxy ​will be​ part of a group of four or‍ more such objects is less than⁣ 0.004‍ percent.In ⁣a new study, ⁣scientists ⁢describe the discovery⁢ of a group consisting of five dwarf galaxies, ‍making ‌the‌ find unique.

The study was based on data from several astronomical ‌surveys, including​ the Sloan Digital Sky​ Survey (SDSS). ⁣Astronomers have resolute that a​ group of galaxies is aligned along ⁤a straight line in the celestial ​plane, with three of them having a common direction of​ rotation.⁢ This indicates potential gravitational interactions between them.

The group⁤ is located in a ⁢relatively isolated habitat about ⁢117.3 million light-years from⁢ Earth. The five galaxies are designated D1, D2, D3, ​D4 ⁤and D5, and they form a thin, flat structure extending⁢ over ⁢502 thousand light years. the maximum difference⁢ in ​radial​ velocities between them is 75 kilometers per second, ⁣and all galaxies are ‍actively forming stars.

The mass of the entire group is about 60.2 billion solar‍ masses.Among dwarf galaxies, the‍ moast massive is D2, with a mass of 275 million solar masses, and the least massive is D4,‌ with ‌a mass of 14.7 million‍ solar ⁤masses. ⁣The median stellar mass of‍ the group’s galaxies is‍ 78.7 million ‌solar ​masses.some galaxies, such⁢ as D3 ⁢and D4, show signs of tidal interactions, which ⁤also confirms their interaction⁤ with each other.

The researchers believe that the discovery of such⁢ a unique⁣ group of dwarf galaxies could considerably expand knowledge⁣ of ‍how groups⁤ of similar objects ​form and evolve. The data ‌obtained can definitely‌ help test theories of⁣ the formation of large ​cosmic structures and improve ⁢understanding‌ of ⁢the mechanisms of the evolution of dwarf galaxies.

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