With the help of the AstroSat spacecraft, Indian astronomers studied the scattered cluster NGC 2506.
The scattered clusters, formed from the same gigantic molecular cloud, are groups of stars that are poorly connected with each other by gravity. To date, in the Milky Way, astronomers have discovered more than 1,000 of them and are still searching, and their in-depth study is crucial to understanding the formation and evolution of the galaxy.
NGC 2506 is about 127,000 light-years away from Earth, and scientists have previously studied this cluster, but they still have little knowledge of its star composition. Previous observations have shown that NGC 2506 has a mass segregation, and smaller stars are likely to be located in the outer parts of the cluster.
Indian scientists have now conducted multiwave observations of this cluster, mainly using the UltraViolet Imaging Telescope telescope on board AstroSat. They have also used archival data.
Overall, scientists have studied 2,175 stars in the NGC 2506 cluster using an algorithm based on machine learning, including nine blue staggers.
The effective temperatures of the BSS stars in NGC 2506 range from 7750 to 9750 Kelvins.