Formation pathway for lonely stripped-envelope supernova progenitors: implications for Cassiopeia A
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Author/Creator ORCID
Date
2020-09-23
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Citation of Original Publication
Ryosuke Hirai et al., Formation pathway for lonely stripped-envelope supernova progenitors: implications for Cassiopeia A, Monthly Notices of the Royal Astronomical Society, staa2898, https://doi.org/10.1093/mnras/staa2898
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This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2020 Oxford University Press Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2020 Oxford University Press Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Subjects
Abstract
We explore a new scenario for producing stripped-envelope supernova progenitors. In our scenario, the stripped-envelope supernova is the second supernova of the binary, in which the envelope of the secondary was removed during its red supergiant phase by the impact of the first supernova. Through 2D hydrodynamical simulations, we find that ∼50–90 % of the envelope can be unbound as long as the pre-supernova orbital separation is ≲ 5 times the stellar radius. Recombination energy plays a significant role in the unbinding, especially for relatively high mass systems (≳ 18 M⊙). We predict that more than half of the unbound mass should be distributed as a one-sided shell at about ∼10–100 pc away from the second supernova site. We discuss possible applications to known supernova remnants such as Cassiopeia A, RX J1713.7-3946, G11.2-0.3, and find promising agreements. The predicted rate is ∼0.35–1% of the core-collapse population. This new scenario could be a major channel for the subclass of stripped-envelope or type IIL supernovae that lack companion detections like Cassiopeia A.