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Detection of the Binary Companion to the Progenitor of SN 1993J

Published online by Cambridge University Press:  19 September 2016

S.J. Smartt ,
J.R. Maund ,
R.P. Kudritzki ,
P. Podsiadlowski  and
G. Gilmore
S.J. Smartt
Affiliation:
IoA, University of Cambridge, Cambridge, UH;sjs@ast.cam.ac.uk, jrm@ast.cam.ac.uk
J.R. Maund
Affiliation:
IoA, University of Cambridge, Cambridge, UH;sjs@ast.cam.ac.uk, jrm@ast.cam.ac.uk
R.P. Kudritzki
Affiliation:
IfA, University of Hawaii, Honolulu, HI, USA;kud@ifa.hawaii.edu
P. Podsiadlowski
Affiliation:
University of Oxford, Oxford, UK;podsi@astro.ox.ac.uk
G. Gilmore
Affiliation:
IoA, University of Cambridge, Cambridge, UH;sjs@ast.cam.ac.uk, jrm@ast.cam.ac.uk

Summary

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We present a detailed late-time photometric and spectroscopic study of SN1993J with HST/ACS and Keck LRIS-B. We find a clear signature of a hot star component in the spectra of SN1993J which cannot be explained by the surrounding faint blue stars. This is the first detection of the expected massive binary companion to the red supergiant progenitor and confirms that SN1993J did indeed arise in an interacting binary system.

Type
Part I Supernovae: Individual
Information
International Astronomical Union Colloquium , Volume 192: Cosmic Explosions , 2005 , pp. 71 - 75
Copyright
Copyright © Springer-Verlag 2005

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