Using the largest spectroscopic sample to date, Type Ib and Ic supernova environments are found to be more metal-rich than Type IIP environments at high statistical significance.
The Disappearance of the Red Supergiant Progenitor of Supernova 2008bk
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abstract
Massive stars end their lives in spectacular supernova explosions. Identifying the progenitor star is a test of stellar evolution and explosion models. Here we show that the progenitor star of the supernova SN 2008bk has now disappeared, which provides conclusive evidence that this was the death of a red supergiant star.
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Metallicity differences between Type IIP and stripped-envelope supernova environments
Using the largest spectroscopic sample to date, Type Ib and Ic supernova environments are found to be more metal-rich than Type IIP environments at high statistical significance.