OGLE-2013-SN-079: A Lonely Supernova Consistent with a Helium Shell Detonation

C. Inserra*, S. A. Sim, L. Wyrzykowski, S. J. Smartt, M. Fraser, M. Nicholl, K. J. Shen, A. Jerkstrand, A. Gal-Yam, D. A. Howell, K. Maguire, P. Mazzali, S. Valenti, S. Taubenberger, S. Benitez-Herrera, D. Bersier, N. Blagorodnova, H. Campbell, T. -W. Chen, N. Elias-RosaW. Hillebrandt, Z. Kostrzewa-Rutkowska, S. Kozllowski, M. Kromer, J. D. Lyman, J. Polshaw, F. K. Roepke, A. J. Ruiter, K. Smith, S. Spiro, M. Sullivan, O. Yaron, D. Young, F. Yuan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We present observational data for a peculiar supernova discovered by the OGLE-IV survey and followed by the Public ESO Spectroscopic Survey for Transient Objects. The inferred redshift of z = 0.07 implies an absolute magnitude in the rest-frame I-band of M-1 similar to -17.6 mag. This places it in the luminosity range between normal Type Ia SNe and novae. Optical and near infrared spectroscopy reveal mostly Ti and Ca lines, and an unusually red color arising from strong depression of flux at rest wavelengths

Original languageEnglish
Article numberL2
Number of pages7
JournalThe Astrophysical Journal Letters
Volume799
Issue number1
DOIs
Publication statusPublished - 09 Jan 2015

Keywords

  • supernovae: general
  • supernovae: individual (OGLE-2013-SN-079)
  • surveys
  • white dwarfs
  • SUB-CHANDRASEKHAR SUPERNOVAE
  • WHITE-DWARFS
  • IA SUPERNOVAE
  • MASS MODELS
  • FAINT TYPE
  • OBSERVABLES
  • TRANSIENTS
  • PHOTOMETRY
  • EXPLOSION
  • IB/C

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