Riddle of the star SMSS J200322.54-114203.3 received one of the options for a solution that can lead to new discoveries of unusual stars. This is an object in the areola of the Milky Way, far enough from us, about 7,500 light years. According to indirect signs, this is a star of the II praise, and therefore only hydrogen and helium were expected to see it in its composition. In practice, there is a whole pantry – there is iron, gold, zinc and even metals, which are traditionally called heavy, like uranium and Europy.
Initially, after a large explosion, there were no heavy elements in the universe, only hydrogen and helium, the first stars formed from them. When they died and exploded supernovae, the energy of this process gave rise to heavy, according to the periodic table. They also became part of the new stars, they lived their term, exploded and gave rise to even more heavy elements. The conclusion is drawn from this – the older the star, the less metals are in it, and the presence of heavy metals unequivocally indicates the small age of the star.
SMSS J200322 star.54-114203.3 (marked with a crosshair)
This is the paradox of SMSS J200322.54, it is very similar to old stars, because it is much smaller than the metal in it than in the same sun, but the chemical composition of the cosmic body is very rich. Where did these elements come from, all these heavy metals? Most likely, with an explosion of hypernova – stars of a huge mass, at least 25 times heavier than the sun.
Immediately in front of the explosion, the hypernova begins to rotate at a huge speed, plus it has a powerful magnetic field. New elements that have formed inside the star cannot leave its limits, and enter into further reactions, giving rise to more and more heavy elements. The calculations confirm this theory, so it remains to find good evidence, for example, in the form of similar unique stars.
Source — Nature