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Evolution of the Precursor of SN1987A

Published online by Cambridge University Press:  25 April 2016

P. R. Wood  and
D. J. Faulkner
P. R. Wood
Affiliation:
Mount Stromlo and Siding Spring Observatories, The Australian National University
D. J. Faulkner
Affiliation:
Mount Stromlo and Siding Spring Observatories, The Australian National University
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Abstract

Evolutionary calculations have been made for a star of initial mass 17.5 M⊙ in order to emulate the evolution of the precursor of SN1987A. The results give good agreement (i) with the observed properties of Sanduleak -69°202 (star 1) when the model reaches the supernova epoch, and (ii) with the observed distribution of red and blue supergiants in the LMC. Mass loss throughout the life of the star at rates reasonably consistent with observed values is required to produce these results. At the time of explosion, the supernova has a mass of only ∼ 5.4 M⊙ and it is surrounded by about 8 M⊙ of wind material in a shell of ∼0.4 pc radius.

Type
SN 1987a
Information
Publications of the Astronomical Society of Australia , Volume 7 , Issue 1 , 1987 , pp. 75 - 79
Copyright
Copyright © Astronomical Society of Australia 1987

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