Astrophysicists from the universities of Notre Dame and Tohoku have revealed the origin story of stars with an abundance of heavy
The researchers used numericalsimulation to trace the history of stars in the Milky Way from the Big Bang. The analysis was carried out over several months using the ATERUI II supercomputer at the Computational Science Center of the National Astronomical Observatory of Japan.
Standard cosmology predicts that the MilkyThe path grows due to the accretion and merger of small progenitor galaxies, the scientists explain. Modeling results showed that some of the progenitor galaxies that existed more than 10 billion years ago contained large amounts of the heaviest elements.
Each merger of neutron stars increased inthese small galaxies contain elements heavier than gold, including gold, platinum and other heavy metals. The results obtained as a result of modeling coincide with the data of the real distribution of heavy metals in the stars of our Galaxy.
These ancient galaxies are buildingMilky Way blocks. Our discoveries mean that many of the gold-rich stars we see today are fossils from the formation of the Milky Way over 10 billion years ago.
Yutaka Hirai, astrophysicist at Tohoku University
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On the cover:simulation of the development of a galaxy similar to the Milky Way. Image: Simulation: Takayuki Saitoh (Kobe University/Tokyo Tech ELSI), Visualization: Takaaki Takeda (VASA Entertainment Co. Ltd.)