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A binary progenitor for the Type Ib Supernova iPTF13bvn

Published online by Cambridge University Press:  23 January 2015

Melina C. Bersten
Melina C. Bersten*
Affiliation:
Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan
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Abstract

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The recent detection in archival HST images of an object at the the location of supernova (SN) iPTF13bvn may represent the first direct evidence of the progenitor of a Type Ib SN. The object's photometry was found to be compatible with a Wolf-Rayet pre-SN star mass of ≈ 11 M⊙. However, based on hydrodynamical models we show that the progenitor had a pre-SN mass of ≈ 3.5 M⊙ and that it could not be larger than ≈ 8 M⊙. We propose an interacting binary system as the SN progenitor and perform evolutionary calculations that are able to self-consistently explain the light-curve shape, the absence of hydrogen, and the pre-SN photometry. Our models also predict that the remaining companion is a luminous O-type star of significantly lower flux in the optical than the pre-SN object. A future detection of such star may be possible and would provide the first robust progenitor identification for a Type-Ib SN.

Keywords

stars: evolutionhydrodynamicssupernovae: generalsupernovae: individual (iPTF13bvn)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 37 - 40
Copyright
Copyright © International Astronomical Union 2015 

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