WR stars are massive stars and strip their outer hydrogen envelope, which is associated with the fusion of helium and other elements in the massive core. Tracking certain types of massive supernova explosions can help probe these stars, which remain an enigma to scientists around the world.
The four Indian scientists from the Observatory of Observational Sciences (ARIES), Aryabhatta, Nainital, an autonomous institute of the Department of Science and Technology, and 16 scientists from different institutes in the US, UK, Canada, Ireland, Italy, Sweden and Korea have conducted optical tracking of a supernova surrounded by this type called SN 2015dj hosted on the Galaxy NGC 7371. They calculated the mass of the star that collapsed to form the supernovae, as well as the his expulsion. Scientists also found that the original star was a combination of two stars: one is a massive WR star and another is a much less massive star than the Sun.
Speaking a
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from South Korea, Mridweeka Singh, who was part of ARIES when the supernova was discovered, said: “This supernova was discovered in 2015. We observed the supernova up to 170 days after its discovery. We then submitted the manuscript in February last year and it was accepted on January 22 this year. The document is now available online and is being published “.
Mridweeka, who moved to South Korea in 2019 after leaving the institute and currently works at the Korean Institute of Astronomy and Space Sciences, told Mridweeka
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, “SN 2015dj is a type Ib supernova whose parent was in a binary system with a mass of between 13 and 20 M_sol. The geometry of the explosion was symmetrical for this supernova. “The team’s discovery and detailed study was recently published in ‘The Astrophysics journal‘.
Supernovae (SNe) are highly energetic explosions in the universe that release a huge amount of energy. Long-term monitoring of these transients opens the door to understanding the nature of the exploding star and the properties of the explosion. It can also help to enumerate the number of massive stars.
Long-term monitoring of these transients opens the door to understanding the nature of the exploding star and the properties of the explosion. It can also help to enumerate the number of massive stars.