Scattered star clusters are groups of stars loosely connected by gravity with each other.
Astronomers using the space telescope Gaia opened in one of the arms of the milky Way scattered three new star clusters and determined their characteristics. They all contain at least a few hundred stars, and have radii of 15 to 20 light-years.
Scattered star clusters are groups of stars loosely connected by gravity with each other. These objects are formed from the same giant molecular cloud, the stars in them have almost the same age and chemical composition. This makes the scattered clusters of the most important objects in studying stellar evolution. Today in the milky Way there are more than 1100 open clusters, and astronomers continue to search for new to improve our understanding of the formation and evolution of our galaxy, informs Rus.Media.
In the new work, a team of astronomers led by Philip Ferreira (Ferreira Filipe A.) announces the opening of three new scattered star clusters in one of the spiral arms of our galaxy, has a marking Sleeve of the Sagittarius-Carina. They received the designation 1 UFMG, UFMG UFMG 2 and 3 and was discovered during the data analysis of the Gaia catalogue Data Release 2 created by the space telescope Gaia. Clusters located at a distance of about 4900 light years from Earth and contains at least a few hundred stars with nearly solar metalcity age Estimates of the clusters range from 0.1 to 1.4 billion years.
The newfound objects are located in the sky near the three already-known open clusters NGC 5999, Majaess 166 and Teutsch 81 in the constellation of the Norm. 1 UFMG, UFMG UFMG 2 and 3 have a limit on the radii of 20.5, a 15.6 and 19.5 light-years, respectively. For comparison, NGC 5999 has a limiting radius of about 15 light years. UFMG UFMG 1 and 2 are more dense Central part, compared with 3 UFMG, UFMG 2 may contain a stellar population with the blue slowly rotating stars and more red rapidly rotating stars.