Other
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.364..509p&link_type=abstract
Nature (ISSN 0028-0836), vol. 364, no. 6437, p. 509-511.
Other
124
Binary Stars, Stellar Envelopes, Stellar Models, Supergiant Stars, Supernovae, Companion Stars, Light Curve, Radioactive Decay, Stellar Winds, Ubv Spectra
Scientific paper
Supernova 1993J in the spiral galaxy M81 is the brightest supernova since SN1987A and, like the latter, appears to be another 'peculiar' type II supernova. The available photometry of the supernova region before the explosion requires the presence of at least two supergiants (one of early spectral type and the other of late type), but the actual progenitor has yet to be identified. We show that the explosion of a late-type supergiant can explain the initial sharp peak in the supernova light curve, provided that the star had lost almost all of its hydrogen-rich envelope before the explosion. In our model, the secondary brightening of the supernova, about 10 days later, is then a consequence of the radioactive decay of Ni-56 (and subsequently Co-56) produced in the explosion. The progenitor could have lost its hydrogen-rich envelope either in a strong stellar wind or, as seems more likely, through mass transfer to a companion star. In the latter case, the companion should reappear after the supernova photosphere has receded, the system having become a binary composed of a neutron star with a massive stellar companion.
Hsu Juliana Ju-Lin
Joss Paul C.
Podsiadlowski Ph
Ross Ronald R.
No associations
LandOfFree
The progenitor of supernova 1993J - A stripped supergiant in a binary system? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The progenitor of supernova 1993J - A stripped supergiant in a binary system?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The progenitor of supernova 1993J - A stripped supergiant in a binary system? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1494111