Optical observations of an SN 2002cx-like peculiar supernova SN 2013en in UGC 11369
Abstract
We present optical observations of an SN 2002cx-like supernova SN 2013en in UGC 11369, spanning from a phase near maximum light (t = + 1 d) to t = + 60 d with respect to the R-band maximum. Adopting a distance modulus of μ = 34.11 ± 0.15 mag and a total extinction (host galaxy+Milky Way) of AV ≈ 1.5 mag, we found that SN 2013en peaked at MR ≈ -18.6 mag, which is underluminous compared to the normal SNe Ia. The near maximum spectra show lines of Si II, Fe II, Fe III, Cr II, Ca II and other intermediate-mass and iron group elements which all have lower expansion velocities (i.e. ∼ 6000 km s- 1). The photometric and spectroscopic evolution of SN 2013en is remarkably similar to those of SN 2002cx and SN 2005hk, suggesting that they are likely to be generated from a similar progenitor scenario or explosion mechanism.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- September 2015
- DOI:
- 10.1093/mnras/stv1303
- arXiv:
- arXiv:1506.02845
- Bibcode:
- 2015MNRAS.452..838L
- Keywords:
-
- supernovae: general;
- supernovae: individual: SN 2013en;
- galaxies: individual: UGC 11369;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 8 pages, 8 figures, 3 tables, accepted for publication in MNRAS