In a first, Indian Institute of Astrophysics astronomers spot ultraviolet emissions from novae in Andromeda galaxy
The Hindu
Astronomers from the Indian Institute of Astrophysics (IIA) have spotted far ultra violet (FUV) emissions from novae for the first time in the neighbouring Andromeda galaxy.
Astronomers from the Indian Institute of Astrophysics (IIA) have spotted far ultra violet (FUV) emissions from novae for the first time in the neighbouring Andromeda galaxy.
The ultraviolet emissions from novae are a special class of transient astronomical event that causes the sudden appearance of a bright, apparently new star that slowly fades over weeks or months, during their outburst.
The IIA team used ultraviolet imaging telescope (UVIT/AstroSat) data of the Andromeda galaxy from public archives, to look for FUV emission from novae during their dormancy.
AstroSat is India’s first dedicated space astronomy observatory and the UVIT is one of the primary payloads which was developed by IIA.
According to the Department of Science and Technology, the team stumbled upon the novae around their eruption phase.
It added that the team, consisting of Judhajeet Basu (IIA and Pondicherry University), Krishnendu S. (IIA and Amrita University), Sudhanshu Barway (IIA), Shatakshi Chamoli (IIA and Pondicherry University), and G. C. Anupama (IIA), also discovered ultraviolet emission from 42 novae, a special class of stellar explosions, and even caught four of them in the act of outburst itself.
The department said that this could help scientists study these interacting binary star systems in our nearest neighbor galaxy at different phases of their life, some piling up matter from their companion, while others spewing it into space.
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