A type IIb model for supernova 1993J

Details A type IIb model for supernova 1993J A type IIb model for supernova 1993J

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.364..507n&link_type=abstract

Nature (ISSN 0028-0836), vol. 364, no. 6437, p. 507-509.

Astronomy and Astrophysics

Astronomy

144

Astronomical Models, Light Curve, Line Spectra, Stellar Spectra, Supernovae, Asymptotic Giant Branch Stars, B Stars, Binary Stars, Hydrogen, Stellar Envelopes, Stellar Spectrophotometry, Supergiant Stars

Scientific paper

The optical lightcurve of SN 1993J is atypical for type II SNs; the light curve around the second maximum resembles that of the type Ib SN 1983N, whose progenitor may have been a He star. The secondary brightening and decay of the light curve can be seen as due to the radioactive decay of Co-56; the progenitor may in view of this have been a red supergiant with thin, H-rich envelope. It follows that the spectrum will evolve from type II to type Ib, justifying SN 1993J's classification as type IIb.

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