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New Developments in Theoretical Modelling of SN 1987A

Published online by Cambridge University Press:  25 April 2016

Ken’ichi Nomoto ,
Toshikazu Shigeyama ,
Shiomi Kumagai  and
Masa-aki Hashimoto
Ken’ichi Nomoto
Affiliation:
University of Tokyo
Toshikazu Shigeyama
Affiliation:
University of Tokyo
Shiomi Kumagai
Affiliation:
University of Tokyo
Masa-aki Hashimoto
Affiliation:
University of Tokyo
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Abstract

We summarise recent developments in modelling SN 1987A including the progenitor’s evolution, explosive nucleosynthesis, optical, X- and γ-ray light curves, and dust formation. The distribution of heavy elements in the ejecta is inferred from the light curves. The pre-peak optical light curve as well as early emergence of X- and γ-ray indicate the mixing of 56Ni into the hydrogen-rich envelope. The plateau-like peak of the optical light curve is well reproduced if hydrogen is mixed into the deep core. The flat X-ray light curve observed by Ginga would be due to the clumpy structure of the core. The progenitor’s blue-red-blue evolution and nitrogen abundance suggest that the progenitor’s hydrogen-rich envelope had mass Menv = 7 − 11 M⊙ and was almost completely mixed.

Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 7 , Issue 4 , 1988 , pp. 490 - 504
Copyright
Copyright © Astronomical Society of Australia 1988

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