Optical studies of Type IIb SN 2011dh

Sahu, D. K. ; Anupama, G. C. ; Chakradhari, N. K. (2013) Optical studies of Type IIb SN 2011dh In: Supernova Environmental Impacts Proceedings IAU Symposium No. 296, 2013.

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Official URL: https://www.cambridge.org/core/journals/proceeding...

Related URL: http://dx.doi.org/10.1017/S174392131300971X


UBVRI photometry and low resolution optical spectroscopy of the type IIb SN 2011dh in M51 are presented, covering the first year after the explosion. The peak absolute magnitude in V-band of −17.12±0.18 mag indicates SN 2011dh to be a normal bright type IIb event. The peak quasi-bolometric luminosity indicates that ~ 0.06 M☉ of 56Ni was synthesized in the explosion. The He I lines were detected in the spectra much before the maximum light in B-band. The nebular spectra of SN 2011dh show a box shaped emission in the red wing of [OI] 6300, 6363 line due to Hα emission excited because of shock-wave interaction. The analysis of the nebular spectra indicates a progenitor with a main sequence mass of 10-15 M☉.

Item Type:Conference or Workshop Item (Paper)
Source:Copyright of this article belongs to International Astronomical Union.
Keywords:Supernovae; Individual; SN 2011dh
ID Code:101709
Deposited On:12 Feb 2018 12:15
Last Modified:12 Feb 2018 12:15

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