Eldridge, J.J. and Maund, J.R. (2016) The disappearance of the helium-giant progenitor of the Type Ib supernova iPTF13bvn and constraints on its companion. Monthly Notices of the Royal Astronomical Society: Letters, 461 (1). L117-L121. ISSN 1745-3925
Abstract
We report and discuss post-explosion observations of supernova iPTF13bvn. We find that the brightness of the supernova (SN) at +740 d is below the level of the pre-explosion source and thus confirm that the progenitor has exploded. We estimate that the late-time brightness is still dominated by the SN, which constrains the magnitude and thus mass of a possible companion star to below approximately 10 M⊙. In turn, this implies that the progenitor's initial mass is constrained to a narrow range between 10 and 12 M⊙. The progenitor of iPTF13bvn would have been a helium giant rather than a Wolf–Rayet star. In addition, we suggest that sufficiently deep observations acquired in 2016 would now stand a chance to directly observe the companion star.
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Copyright, Publisher and Additional Information: | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society: Letters © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Reproduced in accordance with the publisher's self-archiving policy. | ||||
Keywords: | binaries: general; stars: evolution; stars: massive; supernovae: general; supernovae: individual; iPTF13bvn | ||||
Dates: |
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 18 Nov 2016 14:20 | ||||
Last Modified: | 18 Nov 2016 14:31 | ||||
Published Version: | https://doi.org/10.1093/mnrasl/slw099 | ||||
Status: | Published | ||||
Publisher: | Oxford University Press (OUP) | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1093/mnrasl/slw099 |