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Title: Observational properties of a type Ib supernova MASTER OT J120451.50+265946.6 in NGC 4080
Authors: Singh, M
Misra, K
Sahu, D. K
Dastidar, R
Gangopadhyay, A
Srivastav, S
Anupama, G. C
Bose, S
Lipunov, V
Chakradhari, N. K
Brajesh Kumar
Pandey, S. B
Gorbovskoy, E
Balanutsa, P
Keywords: Techniques: photometric;Techniques: spectroscopic;Supernovae: general;Supernovae: individual;MASTER OT J120451.50+265946.6 (M12045);Galaxies: individual: NGC 4080
Issue Date: Jun-2019
Publisher: Oxford University Press on behalf of the Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society, Vol. 485, No. 4, pp. 5438–5452
Abstract: MASTER OT J120451.50+265946.6 (M12045), discovered by the MASTER Global Robotic Net, is a Type Ib supernova (SN) that exploded in NGC 4080. We present the BVRI photometric and spectroscopic observations up to ∼250 d since Bmax. At the time of discovery the SN was a few weeks past maximum light and our observations capture the linearly declining light-curve phase. M12045 declines faster as compared to SNe 1999dn and 2009jf at comparable epochs. Rigorous spectroscopic monitoring reveals that M12045 is a normal Type Ib SN. The analysis of the nebular phase spectra indicates that ∼0.90 M⊙ of O is ejected in the explosion. The line ratio of [O i] and [Ca ii] in the nebular phase supports a massive WR progenitor with main-sequence mass of ∼20 M⊙.
Description: Restricted Access
ISSN: 1365-2966
???metadata.dc.rights???: © Royal Astronomical Society
Appears in Collections:IIAP Publications

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