Astronomers spot blue straggler star hosting brown dwarf companion
An artist’s impression of the discovered compact binary system showing a BSS primary orbited by a BD companion in an ultra-short, nearly circular orbit with a period of about 5.6 hours | Photo Credit: Special Arrangement A team of astronomers from various institutions have made the world’s first confirmed discovery of a blue straggler star hosting a brown dwarf companion in a very compact binary system. This breakthrough by the team from the Indian Institute of Astrophysics (IIA), Aryabhatta Research Institute of Observational Sciences (ARIES), Gauhati University, and INAF-Catania Astrophysical Observatory, Italy, could reshape astronomers’ understanding of how stars evolve. Brighter and bluer According to the Department of Science and Technology, scientists have long been puzzled by blue straggler stars, which appear brighter and bluer than the main-sequence turn-off in star clusters, defying standard stellar evolution because all cluster stars are expected to be of similar age. The team consisted of Ali Hasan Sheikh, Biman J. Medhi from Gauhati University, Sergio Messina from INAF-Catania, Annapurni Subramanium and Ram Sagar from IIA, and Neelam Panwar from …









