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Scientists from India and China Investigate Massive Stars That Activate Second-Generation Stars | India News


Scientists distributed by institutions in Bengaluru, Beijing (China), Mumbai, Ahmedabad and Nainital, in a collaborative work, have investigated how massive stars trigger the formation of second generation stars, stars molded from remains of the formation of stars. first-generation stars, in HII Regions, which are emission nebulae created when massive young stars ionize nearby gas clouds with high-energy UV radiation.
Astronomers from the Indian Institute of Astrophysics, Bengaluru, Aryabhatta Research Institute for Observational Sciences (ARIES), Nainital, together with their collaborators from the Tata Institute for Fundamental Research, Mumbai, Physics Research Laboratory, Ahmedabad and the Kavli Institute for Astronomy and Astrophysics, Beijing By studying an HII region, called Sh2-112, it was found that the nebula and its environment created by a massive star 23 times more massive than our Sun, triggered the formation of second-generation stars on the periphery.
This study, which has been accepted for publication in the ‘Astrophysical Journal’, was carried out using the Devasthal ARIES fast optical telescope, the 2m Himalayan Chandra telescope, the giant VHF radio telescope (GMRT), among other instruments.
“The researchers found evidence of the interaction of the HII region with leftover cloud material (from first-generation stars), which triggered the formation of the next generation of stars for the first time,” said the department of science and technology. (DST) said.
The scientists observed a census of the young stellar and proto-stellar candidates populated toward the western limit of the HII region. In that direction a young HII region (compact / ultracompact) formed due to a star approximately 15 times more massive than the Sun was also found.
Stating that this may help track massive star formation at a much younger stage, the researchers noted that scientists have long explored the possibility of inducing star formation in the environment of HII regions. Although various models have been proposed, it is still unclear whether activation is important in all star-forming regions (SFRs) and which mode of activation is efficient.

Times of India