On the progenitors of core-collapse supernovae |
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Authors: | Douglas C Leonard |
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Institution: | (1) Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge |
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Abstract: | Theory holds that a star born with an initial mass between about 8 and 140 times the mass of the Sun will end its life through
the catastrophic gravitational collapse of its iron core to a neutron star or black hole. This core collapse process is thought
to usually be accompanied by the ejection of the star’s envelope as a supernova. This established theory is now being tested
observationally, with over three dozen core-collapse supernovae having had the properties of their progenitor stars directly
measured through the examination of high-resolution images taken prior to the explosion. Here I review what has been learned
from these studies and briefly examine the potential impact on stellar evolution theory, the existence of “failed supernovae”,
and our understanding of the core-collapse explosion mechanism. |
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