A team of international researchers led by Dr. Florian Peißker at the Institute of Astrophysics at the University of Cologne has discovered a newly forming star near the supermassive black hole, Sagittarius A*, located at the center of the Milky Way. The newly discovered star, referred to as baby
The Galactic center at a distance of about 30000 light years. In the center of the image is the supermassive black hole Sgr A* . The position of Sgr A* can be inferred from the motion of the stars. Because of the dust cloud and its dimensions around X3a the baby star is also not visible in this image. Credit: Florian Peißker
Precisely these conditions act against the formation of stars like our Sun. Therefore, for a long time, scientists had assumed that over periods of billions of years, only old, evolved stars can settle by dynamical friction in the vicinity of the supermassive black hole. First author Dr. Florian Peißker explained: “It turns out that there is a region at a distance of a few light years from the black hole which fulfills the conditions for star formation. This region, a ring of gas and dust, is sufficiently cold and shielded against destructive radiation.”
The scientists assume the following scenario to be possible: shielded from the gravitational influence of Sgr A* and intense radiation, a dense enough cloud could have formed in the outer gas and dust ring around the center of the Galaxy. This cloud had a mass of about one hundred suns and collapsed under its own gravity to one or more protostars.
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