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Helium giant stars as progenitors of rapidly fading Type Ibc supernovae

Kleiser, Io and Fuller, Jim and Kasen, Daniel (2018) Helium giant stars as progenitors of rapidly fading Type Ibc supernovae. Monthly Notices of the Royal Astronomical Society: Letters, 481 (1). L141-L145. ISSN 1745-3925. doi:10.1093/mnrasl/sly180.

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Type I rapidly fading supernovae (RFSNe) appear to originate from hydrogen-free stars with large radii that produce predominantly shock-cooling light curves, in contrast with more typical ^(56)Ni-rich SNe Ibc. However, it remains to be determined what types of stars would produce bright shock-cooling light curves without significant contribution from radioactive nickel. Bare helium stars in the mass range ∼2-4M⊙ are known to hydrostatically develop radii as large as 100 R⊙ or more due to strong He and C shell burning outside of a core with a sharp density gradient. We produce several such stellar models and demonstrate that, when exploded, these helium giants can naturally produce RFSN light curves. Since many prototypical SNe Ibc should come from large-radius stars in this mass range as well, we predict that these RFSNe may be distinct from SNe Ibc solely due to the absence of substantial ^(56)Ni.

Item Type:Article
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URLURL TypeDescription Paper
Fuller, Jim0000-0002-4544-0750
Additional Information:© 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model ( Accepted 2018 September 22. Received 2018 September 22; in original form 2018 June 1. Published: 27 September 2018. The authors thank Lars Bildsten, Jared Brooks, Sterl Phinney, Evan Kirby, Selma de Mink, Thomas Tauris, and Onno Pols for useful discussion. IK is supported by the DOE NNSA Stockpile Stewardship Graduate Fellowship Program. This research is also funded in part by the Gordon and Betty Moore Foundation through Grant GBMF5076. DK is supported in part by a Department of Energy Office of Nuclear Physics Early Career Award, and by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Divisions of Nuclear Physics, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
Group:TAPIR, Astronomy Department
Funding AgencyGrant Number
Gordon and Betty Moore FoundationGBMF5076
Department of Energy (DOE)DE-AC02-05CH11231
Subject Keywords:binaries: general – supernovae: general – supernovae: individual: SN 2010X
Issue or Number:1
Record Number:CaltechAUTHORS:20181212-144449110
Persistent URL:
Official Citation:Io Kleiser, Jim Fuller, Daniel Kasen; Helium giant stars as progenitors of rapidly fading Type Ibc supernovae, Monthly Notices of the Royal Astronomical Society: Letters, Volume 481, Issue 1, 21 November 2018, Pages L141–L145,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91739
Deposited By: Tony Diaz
Deposited On:12 Dec 2018 22:49
Last Modified:16 Nov 2021 03:44

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