CaltechAUTHORS
  A Caltech Library Service

The impostor revealed: SN 2016jbu was a terminal explosion

Brennan, S. J. and Elias-Rosa, N. and Fraser, M. and Van Dyk, S. D. and Lyman, J. D. (2022) The impostor revealed: SN 2016jbu was a terminal explosion. Astronomy and Astrophysics, 664 . Art. No. L18. ISSN 0004-6361. doi:10.1051/0004-6361/202244262. https://resolver.caltech.edu/CaltechAUTHORS:20220916-666291000

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20220916-666291000

Abstract

In this Letter, we present recent observations from the Hubble Space Telescope of the interacting transient SN 2016jbu at +5 yr. We find no evidence for any additional outburst from SN 2016jbu, and the optical source has now faded significantly below the progenitor magnitudes from early 2016. Similar to recent observations of SN 2009ip and SN 2015bh, SN 2016jbu has not undergone a significant change in colour over the past 2 years, suggesting that there is a lack of ongoing dust formation. We find that SN 2016jbu is fading more slowly than expected of radioactive nickel, but faster than the decay of SN 2009ip. The late-time light curve displays a non-linear decline and follows on from a re-brightening event that occurred ∼8 months after peak brightness, suggesting CSM interaction continues to dominate SN 2016jbu. While our optical observations are plausibly consistent with a surviving, hot, dust-enshrouded star, this would require an implausibly large dust mass. These new observations suggest that SN 2016jbu is a genuine, albeit strange, supernova, and we discuss the plausibility of a surviving binary companion.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1051/0004-6361/202244262DOIArticle
ORCID:
AuthorORCID
Elias-Rosa, N.0000-0002-1381-9125
Fraser, M.0000-0003-2191-1674
Van Dyk, S. D.0000-0001-9038-9950
Additional Information:S. J. Brennan would like to thank their support from Science Foundation Ireland and the Royal Society (RS-EA/3471). N.E.R. acknowledges partial support from MIUR, PRIN 2017 (grant 20179ZF5KS), from the Spanish MICINN grant PID2019-108709GB-I00 and FEDER funds, and from the program Unidad de Excelencia María de Maeztu CEX2020-001058- M. M. F. is supported by a Royal Society – Science Foundation Ireland University Research Fellowship. J. D. L. acknowledges support from a UK Research and Innovation Fellowship(MR/T020784/1) This research is based on observations made with the NASA/ESA Hubble Space Telescope obtained from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with program GO-16671. This research was achieved using the POLLUX database operated at LUPM (Université Montpellier – CNRS, France with the support of the PNPS and INSU. This work made use of v2.2.1 of the Binary Population and Spectral Synthesis (BPASS) models as described in Eldridge et al. (2017) and Stanway & Eldridge (2018).
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
Science Foundation IrelandUNSPECIFIED
Royal SocietyRS-EA/3471
Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR)20179ZF5KS
Ministerio de Ciencia e Innovación (MICINN)PID2019-108709GB-I00
Fondo Europeo de Desarrollo Regional (FEDER)UNSPECIFIED
Unidad de Excelencia María de MaeztuCEX2020-001058-M
UK Research and InnovationMR/T020784/1
NASANAS 5-26555
DOI:10.1051/0004-6361/202244262
Record Number:CaltechAUTHORS:20220916-666291000
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20220916-666291000
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:117034
Collection:CaltechAUTHORS
Deposited By: Olivia Warschaw
Deposited On:21 Oct 2022 17:32
Last Modified:25 Oct 2022 19:44

Repository Staff Only: item control page