LSQ13DDU: A rapidly evolving stripped-envelope supernova with early circumstellar interaction signatures

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

DOI

  • Peter Clark, Queen's University Belfast
  • ,
  • Kate Maguire, Queen's University Belfast, Trinity College Dublin
  • ,
  • Cosimo Inserra, Cardiff University
  • ,
  • Simon Prentice, Queen's University Belfast, Trinity College Dublin
  • ,
  • Stephen J. Smartt, Queen's University Belfast
  • ,
  • Carlos Contreras, Carnegie Institution of Washington
  • ,
  • Griffin Hossenizadeh, Harvard-Smithsonian Center for Astrophysics
  • ,
  • Eric Y. Hsiao, Florida State University
  • ,
  • Erkki Kankare, University of Turku
  • ,
  • Mansi Kasliwal, California Institute of Technology
  • ,
  • Peter Nugent, Lawrence Berkeley National Laboratory
  • ,
  • Melissa Shahbandeh, Florida State University
  • ,
  • Charles Baltay, Yale University
  • ,
  • David Rabinowitz, Yale University
  • ,
  • Iair Arcavi, Tel Aviv University
  • ,
  • Chris Ashall, Florida State University
  • ,
  • Christopher R. Burns, Carnegie Observatories
  • ,
  • Emma Callis, University College Dublin, Dublin
  • ,
  • Ting Wan Chen, Giessenbachstrasse
  • ,
  • Tiara Diamond, NASA Goddard Space Flight Center
  • ,
  • Morgan Fraser, University College Dublin, Dublin
  • ,
  • D. Andrew Howell, Las Cumbres Observatory Global Telescope Network, Inc, University of California, Santa Barbara
  • ,
  • Emir Karamehmetoglu
  • Rubina Kotak, University of Turku
  • ,
  • Joseph Lyman, The University of Warwick
  • ,
  • Nidia Morrell, Carnegie Institution of Washington
  • ,
  • Mark Phillips, Carnegie Institution of Washington
  • ,
  • Giuliano Pignata, Universidad Andres Bello, Millennium Institute of Astrophysics
  • ,
  • Miika Pursiainen, University Hospital Southampton
  • ,
  • Jesper Sollerman, Stockholm University
  • ,
  • Maximilian Stritzinger
  • Mark Sullivan, University Hospital Southampton
  • ,
  • David Young, Queen's University Belfast

This paper describes the rapidly evolving and unusual supernova LSQ13ddu, discovered by the La Silla-QUEST survey. LSQ13ddu displayed a rapid rise of just 4.8 ± 0.9 d to reach a peak brightness of −19.70 ± 0.02 mag in the LSQgr band. Early spectra of LSQ13ddu showed the presence of weak and narrow He I features arising from interaction with circumstellar material (CSM). These interaction signatures weakened quickly, with broad features consistent with those seen in stripped-envelope SNe becoming dominant around two weeks after maximum. The narrow He I velocities are consistent with the wind velocities of luminous blue variables but its spectra lack the typically seen hydrogen features. The fast and bright early light curve is inconsistent with radioactive 56Ni powering but can be explained through a combination of CSM interaction and an underlying 56Ni decay component that dominates the later time behaviour of LSQ13ddu. Based on the strength of the underlying broad features, LSQ13ddu appears deficient in He compared to standard SNe Ib.

Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society
Volume492
Issue2
Pages (from-to)2208-2228
Number of pages21
ISSN0035-8711
DOIs
Publication statusPublished - 2020

    Research areas

  • Circumstellar matter, Supernovae: general, Supernovae: individual: LSQ13ddu

See relations at Aarhus University Citationformats

ID: 185152723