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Evolution & Explosion of Massive Stars Leading to IIP-IIL SNe with MESA & SNEC

Published online by Cambridge University Press:  17 October 2017

Sanskriti Das  and
Alak Ray
Sanskriti Das
Affiliation:
Department of Physics, Indian Institute of Technology Bombay, Mumbai- 400076, India email: dassanskriti@gmail.com
Alak Ray
Affiliation:
Dept. of Astronomy & AstroPhysics, Tata Institute of Fundamental Research, Mumbai- 400005, India email: akr@tifr.res.in
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Abstract

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We show how the dense shells of circumstellar gas immediately outside the red supergiants(RSGs) can affect the early optical light curves of Type II-P SNe taking the example of 2013ej. The peak in V, R and I bands, decline rate after peak and plateau length are found to be strongly influenced by the dense CSM formed due to enhanced mass loss during the oxygen and silicon burning stage of the progenitor. We find that the required explosion energy for the progenitors with CSM is reduced by almost a factor of 2.

Keywords

Supernovaehydrodynamicsradiative transferII-PII-LCSMindividual: 2013ej

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