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Revisiting the red supergiant progenitors of core-collapse supernovae

Published online by Cambridge University Press:  27 October 2016

Schuyler D. Van Dyk
Schuyler D. Van Dyk*
Affiliation:
Caltech, 100-22, Pasadena, CA 91125USA email: vandyk@ipac.caltech.edu
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Abstract

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I will present a reanalysis of the properties of the red supergiant (RSG) progenitors of several extragalactic core-collapse, Type II-Plateau supernovae, including SN 2012aw, SN 2013ej, SN 2004et, and SN 2008bk. The observed spectral energy distributions (SEDs) for these stars, from the optical to the infrared, are compared with model SEDs for Galactic RSGs, as well as with the observed SEDs of analogous RSGs in Local Group galaxies. As a result, new estimates of the stellar temperatures and luminosities for the progenitors are obtained, and through comparison with recent massive stellar evolutionary tracks, new inferences are made for the progenitors initial masses. I will place these in the context of the RSG SN progenitor mass spectrum and of the so-called “red supergiant problem.”

Keywords

supernovae: individual (SN 2008bk, SN 2012aw, SN 2013ej)stars: evolutionstars: luminosity functionmass functiongalaxies: individual (NGC 628, NGC 3351, NGC 7793)galaxies: stellar content
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 474
Copyright
Copyright © International Astronomical Union 2016 

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