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-Rosa; W. Hillebrandt; Z. Kostrzewa-Rutkowska; S. Kozłowski; M. Kromer; J. D. Lyman; J. Polshaw; F. K. Röpke; A. J. Ruiter; K. Smith; S. Spiro; M. Sullivan; O. Yaron; D. Young; F. Yuan

doi:10.1088/2041-8205/799/1/L2

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. Kozłowski, M. Kromer, J. D. Lyman, J. Polshaw, F. K. Röpke, A. J. Ruiter, K. Smith, S. Spiro, M. Sullivan, O. Yaron, D. Young, F. Yuan

Physics and Astronomy

Research output: Contribution to journal › Letter › peer-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_I ~ –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 <5000 Å. To date, this is the only reported SN showing Ti-dominated spectra. The data are broadly consistent with existing models for the pure detonation of a helium shell around a low-mass CO white dwarf and "double-detonation" models that include a secondary detonation of a CO core following a primary detonation in an overlying helium shell.

Original language	English
Article number	L2
Number of pages	7
Journal	Astrophysical Journal Letters
Volume	799
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/799/1/L2
Publication status	Published - 9 Jan 2015

Keywords

supernovae: general
supernovae: individual: OGLE-2013-SN-079
surveys
white dwarfs
Astrophysics - Solar and Stellar Astrophysics

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Inserra, C., Sim, S. A., Wyrzykowski, L., Smartt, S. J., Fraser, M., Nicholl, M., Shen, K. J., Jerkstrand, A., Gal-Yam, A., Howell, D. A., Maguire, K., Mazzali, P., Valenti, S., Taubenberger, S., Benitez-Herrera, S., Bersier, D., Blagorodnova, N., Campbell, H., Chen, T. -W., ... Yuan, F. (2015). OGLE-2013-SN-079: a lonely supernova consistent with a helium shell detonation. Astrophysical Journal Letters, 799(1), Article L2. https://doi.org/10.1088/2041-8205/799/1/L2

@article{d187957ce9514c098da849fa134afd21,

title = "OGLE-2013-SN-079: a lonely supernova consistent with a helium shell detonation",

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 MI ~ –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 <5000 {\AA}. To date, this is the only reported SN showing Ti-dominated spectra. The data are broadly consistent with existing models for the pure detonation of a helium shell around a low-mass CO white dwarf and {"}double-detonation{"} models that include a secondary detonation of a CO core following a primary detonation in an overlying helium shell.",

keywords = "supernovae: general, supernovae: individual: OGLE-2013-SN-079, surveys, white dwarfs, Astrophysics - Solar and Stellar Astrophysics",

author = "C. Inserra and Sim, {S. A.} and L. Wyrzykowski and Smartt, {S. J.} and M. Fraser and M. Nicholl and Shen, {K. J.} and A. Jerkstrand and A. Gal-Yam and Howell, {D. A.} and K. Maguire and P. Mazzali and S. Valenti and S. Taubenberger and S. Benitez-Herrera and D. Bersier and N. Blagorodnova and H. Campbell and Chen, {T. -W.} and N. Elias-Rosa and W. Hillebrandt and Z. Kostrzewa-Rutkowska and S. Koz{\l}owski and M. Kromer and Lyman, {J. D.} and J. Polshaw and R{\"o}pke, {F. K.} and Ruiter, {A. J.} and K. Smith and S. Spiro and M. Sullivan and O. Yaron and D. Young and F. Yuan",

year = "2015",

month = jan,

day = "9",

doi = "10.1088/2041-8205/799/1/L2",

language = "English",

volume = "799",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "Institute of Physics Publishing Ltd",

number = "1",

}

Inserra, C, Sim, SA, Wyrzykowski, L, Smartt, SJ, Fraser, M, Nicholl, M, Shen, KJ, Jerkstrand, A, Gal-Yam, A, Howell, DA, Maguire, K, Mazzali, P, Valenti, S, Taubenberger, S, Benitez-Herrera, S, Bersier, D, Blagorodnova, N, Campbell, H, Chen, T-W, Elias-Rosa, N, Hillebrandt, W, Kostrzewa-Rutkowska, Z, Kozłowski, S, Kromer, M, Lyman, JD, Polshaw, J, Röpke, FK, Ruiter, AJ, Smith, K, Spiro, S, Sullivan, M, Yaron, O, Young, D & Yuan, F 2015, 'OGLE-2013-SN-079: a lonely supernova consistent with a helium shell detonation', Astrophysical Journal Letters, vol. 799, no. 1, L2. https://doi.org/10.1088/2041-8205/799/1/L2

TY - JOUR

T1 - OGLE-2013-SN-079

T2 - a lonely supernova consistent with a helium shell detonation

AU - Inserra, C.

AU - Sim, S. A.

AU - Wyrzykowski, L.

AU - Smartt, S. J.

AU - Fraser, M.

AU - Nicholl, M.

AU - Shen, K. J.

AU - Jerkstrand, A.

AU - Gal-Yam, A.

AU - Howell, D. A.

AU - Maguire, K.

AU - Mazzali, P.

AU - Valenti, S.

AU - Taubenberger, S.

AU - Benitez-Herrera, S.

AU - Bersier, D.

AU - Blagorodnova, N.

AU - Campbell, H.

AU - Chen, T. -W.

AU - Elias-Rosa, N.

AU - Hillebrandt, W.

AU - Kostrzewa-Rutkowska, Z.

AU - Kozłowski, S.

AU - Kromer, M.

AU - Lyman, J. D.

AU - Polshaw, J.

AU - Röpke, F. K.

AU - Ruiter, A. J.

AU - Smith, K.

AU - Spiro, S.

AU - Sullivan, M.

AU - Yaron, O.

AU - Young, D.

AU - Yuan, F.

PY - 2015/1/9

Y1 - 2015/1/9

N2 - 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 MI ~ –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 <5000 Å. To date, this is the only reported SN showing Ti-dominated spectra. The data are broadly consistent with existing models for the pure detonation of a helium shell around a low-mass CO white dwarf and "double-detonation" models that include a secondary detonation of a CO core following a primary detonation in an overlying helium shell.

AB - 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 MI ~ –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 <5000 Å. To date, this is the only reported SN showing Ti-dominated spectra. The data are broadly consistent with existing models for the pure detonation of a helium shell around a low-mass CO white dwarf and "double-detonation" models that include a secondary detonation of a CO core following a primary detonation in an overlying helium shell.

KW - supernovae: general

KW - supernovae: individual: OGLE-2013-SN-079

KW - surveys

KW - white dwarfs

KW - Astrophysics - Solar and Stellar Astrophysics

U2 - 10.1088/2041-8205/799/1/L2

DO - 10.1088/2041-8205/799/1/L2

M3 - Letter

SN - 2041-8205

VL - 799

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L2

ER -

OGLE-2013-SN-079: a lonely supernova consistent with a helium shell detonation

Abstract

Keywords

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