SIMBAD references

2017MNRAS.472.5004U - Mon. Not. R. Astron. Soc., 472, 5004-5010 (2017/December-3)

Luminous Type IIP SN 2013ej with high-velocity 56Ni ejecta.


Abstract (from CDS):

We explore the well-observed Type IIP supernova 2013ej with peculiar luminosity evolution. It is found that the hydrodynamic model cannot reproduce in detail the bolometric luminosity at both the plateau and the radioactive tail. Yet the ejecta mass of 23-26 M and the kinetic energy of (1.2-1.4) x 1051 erg are determined rather confidently. We suggest that the controversy revealed in hydrodynamic simulations stems from the strong asphericity of the 56Ni ejecta. An analysis of the asymmetric nebular H α line and of the peculiar radioactive tail made it possible to recover parameters of the asymmetric bipolar 56Ni ejecta with the heavier jet residing in the rear hemisphere. The inferred 56Ni mass is 0.039 M, twice as large compared to a straightforward estimate from the bolometric luminosity at the early radioactive tail. The bulk of ejected 56Ni has velocities in the range of 4000-6500 km s–1. The linear polarization predicted by the model with the asymmetric ionization produced by bipolar 56Ni ejecta is consistent with the observational value.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): hydrodynamics - methods: numerical - supernovae: general - supernovae: individual: SN 2013ej - supernovae: individual: SN 2013ej

Simbad objects: 15

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