Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 799, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/799/1/L2
Keywords
supernovae: general; supernovae: individual (OGLE-2013-SN-079); surveys; white dwarfs
Categories
Funding
- FP7/ERC [291222, 320360]
- DFG [ST/L000709/1, 267251]
- STFC [ST/J001465/1, ST/L000709/1, ST/L00061X/1, ST/M001970/1, ST/L000679/1, ST/M003515/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/M003515/1, ST/L000679/1, ST/J001465/1, ST/M001970/1, ST/L000709/1, ST/L00061X/1] Funding Source: researchfish
Ask authors/readers for more resources
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 <5000 angstrom. 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available