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Classification of AT 2016c in NGC 5247 as a type II supernova

ATel #8514; D. K. Sahu, G. C. Anupama, Shubham Srivastav (Indian Institute of Astrophysics, Bengaluru, India), N. K. Chakradhari (Pt. R. S.S Univ., Raipur, India)
on 8 Jan 2016; 09:56 UT
Credential Certification: G.C. Anupama (gca@iiap.res.in)

Subjects: Optical, Supernovae

We report spectroscopic classification of the candidate supernova AT 2016C in the nearby galaxy NGC 5247. A medium resolution spectrum (390 - 930 nm) of AT 2016C was obtained on 2016 January 7.98 (UT), with the HFOSC mounted on the 2m. Himalayan Chandra Telescope of the Indian Astronomical Observatory, Hanle, India. The spectrum shows prominent Hydrogen Balmer lines. Classification with the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates it is a young type-IIP event. The best match is found with SN 2005cs around 10 days after explosion. The expansion velocity of the ejecta, estimated using the P-Cygni profile of H_alpha is ~7000 km/sec.