Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

SN 2020kyg and the rates of faint Iax Supernovae from ATLAS

Tools
- Tools
+ Tools

Srivastav, Shubham, Smartt, S. J., Huber, M. E., Chambers, K. C., Angus, C. R., Chen, T-W., Callan, F. P., Gillanders, J. H., McBrien, O. R., Sim, S. A. et al.
(2022) SN 2020kyg and the rates of faint Iax Supernovae from ATLAS. Monthly Notices of the Royal Astronomical Society, 511 (2). pp. 2708-2731. doi:10.1093/mnras/stac177 ISSN 1745-3933.

[img]
Preview
PDF
WRAP-SN-2020kyg-rates-faint-Iax-Supernovae-from-ATLAS-2022.pdf - Published Version - Requires a PDF viewer.
Available under License Creative Commons Attribution 4.0.

Download (4Mb) | Preview
Official URL: https://doi.org/10.1093/mnras/stac177

Request Changes to record.

Abstract

We present multi-wavelength follow-up observations of the ATLAS discovered faint Iax supernova SN 2020kyg that peaked at an absolute magnitude of Mg ≈ −14.9 ± 0.2, making it another member of the faint Iax supernova population. The bolometric light curve requires only ≈7 × 10−3 M⊙ of radioactive 56Ni, with an ejected mass of Mej ∼ 0.4 M⊙ and a low kinetic energy of E ≈ 0.05 ± 0.02 × 1051 erg. We construct a homogeneous volume-limited sample of 902 transients observed by ATLAS within 100 Mpc during a 3.5 year span. Using this sample, we constrain the rates of faint Iax (Mr ≳ −16) events within 60 Mpc at $12^{+14}_{-8}\%$ of the SN Ia rate. The overall Iax rate, at $15^{+17}_{-9}\%$ of the Ia rate, is dominated by the low-luminosity events, with luminous SNe Iax (Mr ≲ −17.5) like 2002cx and 2005hk accounting for only $0.9^{+1.1}_{-0.5}\%$ of the Ia rate (a 2σ upper limit of approximately 3%). We favour the hybrid CONe WD + He star progenitor channel involving a failed deflagration of a near Chandrasekhar mass white dwarf, expected to leave a bound remnant and a surviving secondary companion, as a candidate explanation for faint Iax explosions. This scenario requires short delay times, consistent with the observed environments of SNe Iax. Furthermore, binary population synthesis calculations have suggested rates of $1-18\%$ of the SN Ia rate for this channel, consistent with our rate estimates.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Supernovae , Supernovae -- Spectra, White dwarf stars , Astronomical spectroscopy
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Oxford University Press
ISSN: 1745-3933
Official Date: April 2022
Dates:
DateEvent
April 2022Published
28 January 2022Available
14 January 2022Accepted
Volume: 511
Number: 2
Page Range: pp. 2708-2731
DOI: 10.1093/mnras/stac177
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 22 March 2022
Date of first compliant Open Access: 23 March 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
ST/P000312/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
ST/T000198/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
16599Villum Fondenhttp://dx.doi.org/10.13039/100008398
CE170100013 (ASTRO 3D)Australian Research Councilhttp://dx.doi.org/10.13039/501100000923
ICN12 009Agencia Nacional de Investigación y DesarrolloUNSPECIFIED
H2020-MSCA-IF-2018-842471Horizon 2020 Framework Programmehttp://dx.doi.org/10.13039/100010661
80NSSC18K0971[NASA] National Aeronautics and Space Administrationhttp://dx.doi.org/10.13039/100000104
NNX14AM74G[NASA] National Aeronautics and Space Administrationhttp://dx.doi.org/10.13039/100000104
NNX12AR65G[NASA] National Aeronautics and Space Administrationhttp://dx.doi.org/10.13039/100000104
NNX13AQ47G[NASA] National Aeronautics and Space Administrationhttp://dx.doi.org/10.13039/100000104
NNX08AR22G[NASA] National Aeronautics and Space Administrationhttp://dx.doi.org/10.13039/100000104
80NSSC21K1572[NASA] National Aeronautics and Space Administrationhttp://dx.doi.org/10.13039/100000104
UNSPECIFIEDHawaiihttp://viaf.org/viaf/143064067
NN12AR55G[NASA] National Aeronautics and Space Administrationhttp://dx.doi.org/10.13039/100000104
80NSSC18K0284[NASA] National Aeronautics and Space Administrationhttp://dx.doi.org/10.13039/100000104
80NSSC18K1575[NASA] National Aeronautics and Space Administrationhttp://dx.doi.org/10.13039/100000104
J1944/80NSSC19K0112Harvard college observatoryhttp://viaf.org/viaf/135912187
HST GO-15889Harvard college observatoryhttp://viaf.org/viaf/135912187
ST/T000198/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
ST/S006109/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics

twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us