Scientists have discovered “smoking stars” in the Milky Way galaxy

An international team of astronomers has discovered “21 ancient smoky stars” in the middle of the Milky Way galaxy as part of a ten-year monitoring project.

The international team said: “Old smoke stars are a new class of red giant stars, stars at the end of their lives that acquire larger masses and lower surface temperatures.”

The team added that these stars were described as ancient smoke stars. This is because it will not be seen until it loses its brightness in the final stages of its existence and emits a cloud of gas and dust.

Philip Lucas, astrophysicist and professor at the University of Hertfordshire and lead author of the study, said: These stars are located in the middle of the Milky Way in a region known as the “stellar nuclear disc”. A large number of stars are concentrated.

Lucas added, “What's surprising about this discovery is that observing stars that are quiet and doing nothing, suddenly their apparent brightness drops 40 to 100 times, making them almost impossible to observe with telescopes. Years and without warning, they regain their original brightness.

Lucas pointed out that these stars emit clouds of smoke, and we believe that these clouds, made up of gas and dust, obscure the observer's view, causing the star to dim. He explained that the matter had spread. By helping in the formation of new generations of stars and planets, ancient stars play an important role in the life cycle of the elements.

Notably, the international, multinational team of astronomers who prepared the study initially looked for young stars as part of an observational program that helped detect a large number of protostars, i.e. newborn stars, with 21 smog. Stars.

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