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Fig. 2

image

Evolution of our PISN progenitor models in the HR diagram. Those models marked with the symbols are used to examin their pulsational properties. We do not find unstable pulsations in models marked by open circles. The models indicated with squares have the pulsational pattern A, those with triangles have the pattern B, and those with filled squares have the pattern C. See Fig. 4 for the definitions of the patterns.

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