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Review of Contributions to the Workshop on SN1993J

Published online by Cambridge University Press:  12 April 2016

J. Craig Wheeler  and
Alexei V. Filippenko
J. Craig Wheeler
Affiliation:
Department of Astronomy, University of Texas, Austin, TX 78712, USA
Alexei V. Filippenko
Affiliation:
Department of Astronomy and Center for Particle Astrophysics, University of California, Berkeley, CA 94720, USA

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At its peak, SN 1993J was one of the brightest supernovae in this century, and it is being studied more thoroughly than any supernova except SN 1987A. It is proving to be similar to the transition object SN 1987K, which metamorphosed from being a hydrogen-rich Type II near peak to having a hydrogen-deficient nebular phase. SN 1993J has been observed throughout the electromagnetic spectrum and with optical spectropolarimetry. It is interacting with a dense circumstellar nebula and is generating radio and X-ray flux, but it has probably not been detected in gamma rays. The photometric and spectral evolution are consistent with a star of original mass ∼ 15 Mʘ that lost appreciable mass to a binary companion leaving an extended, helium-rich hydrogen envelope of ≲ 0.5 Mʘ and a helium core of ∼ 4 Mʘ. The spectral evolution will put strong constraints on the mixing of 66Ni and other species.

Type
SN 1987A, SN 1993J, and Other Supernovae
Information
International Astronomical Union Colloquium , Volume 145: Supernovae and Supernova Remnants , 1996 , pp. 241 - 276
Copyright
Copyright © Cambridge University Press 1996

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