If you live in the southern hemisphere of the Earth, most likely you will be able to see some stars in the newly identified cosmic river flowing through the Milky Way hundreds of millions of years
. the newly discovered giant cluster of stars is relatively close to our solar system. The cluster contains at least 4,000 stars, which are constantly moving along the night sky as a river covering almost the entire southern sky. It is clear that stars are not new discoveries: the fact that they are in a cluster together is a revelation here.
"Most of the star clusters in the galactic disk are rapidly dissipated after their birth, because they do not contain enough stars to create. deep gravity potential, or, in other words, they do not have enough glue to keep them together, "said Stefan Meingast, lead author of the study published today in the journal Astronomy and Astrophysics and an astronomer at the University of Vienna, Austria.
"Even in the immediate solar region, there are several clusters of sufficient stellar mass that remain intact for several hundred million years. In this way, in principle, similar, large flow-like clusters or associations should also be part of the Milky Way disk.
It is believed that the stellar river was formed about a billion years ago and ran the Milky Way.
Credit image: Astronomy and astrophysy
Researchers from the University of Vienna and Harvard University noticed a stellar flow, carefully comparing the 3D motion of 200 stars, using data from the European Gaia spacecraft. The distribution and motion of the stars showed that they were all closed in the chest, and they were stretched by the gravitational field of the Milky Way.
so that we can calculate the expansion of the universe, cosmoboffins plead
University of Vienna.
"Astronomers have long been looking at this new stream and through it, because it covers most of the night sky, but only now it realizes that it is, and it is huge, and shocking ones close. to the sun. Finding things that are close to the house is very useful, which means they are not too weak and not too blurry for further detailed study, as astronomers dream.
The team hopes that studying the river of winding stars will give them a better understanding of the Mass and Gravitational Field of the Milky Way, and help scientists understand how he got his stars.