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Nature ${rb.getVolume()}, 129-131 (8 January 2004) | doi:10.1038/nature02161;
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- Synchrotron SOLEIL
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The massive binary companion star to the progenitor of supernova 1993J
The massive star that underwent a collapse of its core to produce supernova (SN)1993J was subsequently identified as a non-variable red supergiant star in images of the galaxy M81 taken before explosion. It showed an excess in ultraviolet and B-band colours, suggesting either the presence of a hot, massive companion star or that it was embedded in an unresolved young stellar association.
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