Possible binary progenitors for the type Ib supernova iPTF13bvn

Abstract

Cao et al. (2013) reported a possible progenitor detection for the type Ib supernovae iPTF13bvn for the first time. We find that the progenitor is in fact brighter than the magnitudes previously reported by approximately 0.7 to 0.2 mag with a larger error in the bluer filters. We compare our new magnitudes to our large set of binary evolution models and find that many binary models with initial masses in the range of 10 to 20M(Sun) match this new photometry and other constraints suggested from analysing the supernova. In addition these lower mass stars retain more helium at the end of the model evolution indicating that they are likely to be observed as type Ib supernovae rather than their more massive, Wolf-Rayet counter parts. We are able to rule out typical Wolf-Rayet models as the progenitor because their ejecta masses are too high and they do not fit the observed SED unless they have a massive companion which is the observed source at the supernova location. Therefore only late-time observations of the location will truly confirm if the progenitor was a helium giant and not a Wolf-Rayet star.

8 pages, 2 figures, Submitted to MNRAS, comment welcome

References in corpus (5)

• The death of massive stars - I. Observational constraints on the progenitors of type II-P supernovae
• The effect of massive binaries on stellar populations and supernova progenitors
• The Galactic WC stars: Stellar parameters from spectral analyses indicate a new evolutionary sequence
• iPTF13bvn: The First Evidence of a Binary Progenitor for a Type Ib Supernova
• Transparent Helium in Stripped Envelope Supernovae

Cited by in corpus (5)

• Observational constraints on the progenitors of core-collapse supernovae : the case for missing high mass stars
• Evolutionary Models for Type Ib/c Supernova Progenitors
• Nebular phase observations of the type-Ib supernova iPTF13bvn favour a binary progenitor
• Observable fractions of core-collapse supernova light curves brightened by binary companions
• Possible Signatures of Ejecta-Companion Interaction in iPTF 13bvn