Computer Science
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.338..401p&link_type=abstract
Nature (ISSN 0028-0836), vol. 338, March 30, 1989, p. 401-403. Research supported by NASA.
Computer Science
30
Binary Stars, Stellar Evolution, Stellar Models, Stellar Systems, Supernova 1987A, Blue Stars, Stellar Mass Accretion, Supergiant Stars
Scientific paper
A class of models for SN1987A is proposed in which the blue supergiant Sk -69 deg 202 is the progenitor and where the supernova evolution of this star is strongly influenced by the accretion of matter from a companion star which was initially the more massive star. Binary stellar evolution calculations show that a model of this type can naturally explain why the apparent progenitor was a blue supergiant rather than a red one. The system became unbound after the supernova event, and the presence of a normal or neutron-star companion will probably be revealed a few years after the explosion. A model of this type can explain all the major observational features of SN1987A and also provides plausible explanations for many of its anomalies.
Joss Paul C.
Podsiadlowski Ph
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