For the first time, a team of astronomers has been successful in investigating the earliest stages of the evolutionary history of our galaxy, the Milky Way. Scientists at the Institute of Astronomy Argelander at the University of Bonn and Max-Planck Institute for Radio Astronomy in Bonn, have concluded that our galaxy moved from its original homogenous state to a lumpy in just a few hundred million years.
The team of Pavel Kroupa and Michael Marks studied spherical groups of stars (globular clusters) found in the halo of the Milky Way, outside the spiral arms in one of which is the sun Every one of those globular clusters containing hundreds of thousands of stars and is believed to have formed at the same time as the protogalaxy that eventually became the Milky Way today.
Globular star clusters can be considered as fossils of early history of the galaxy, as has been shown that these clusters retain traces of the conditions under which they formed. The stars of the clusters were formed from a cloud of molecular gas (hydrogen relatively cold), which is not completely exhausted in the process of star formation. The residual gas was expelled by the winds and radiation from the newborn population of stars.
Due to this expulsion of gas, globular clusters underwent a process in which they lost to the stars that formed in its borders. This means that the current appearance of the clusters was directly influenced by what happened in his childhood.
The appearance of the clusters is also due to the influence exerted by the formation of the Milky Way, and the authors of the new research has figured out how exactly the protogalaxy affected their smaller neighbors.