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arXiv · 1506.02845

Optical observations of a SN 2002cx-like peculiar supernova SN 2013en in UGC 11369

Zheng-Wei Liu·Jujia Zhang·Fabrizio Ciabattari·Lina Tomasella·Xiaofeng Wang·Xulin Zhao·Tianmeng Zhang·Yuxin Xin·ChuanJun Wang·Liang Chang
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Abstract

We present optical observations of a 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 mu=34.11 +/- 0.15 mag and a total extinction (host galaxy+Milky Way) of $A_V \sim1.5$ mag, we found that SN 2013en peaked at $M(R)\sim -18.6$ 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). 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.

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Zheng-Wei Liu, Jujia Zhang, Fabrizio Ciabattari, Lina Tomasella, Xiaofeng Wang, Xulin Zhao, Tianmeng Zhang, Yuxin Xin, ChuanJun Wang, Liang Chang. 2015-06-09. Optical observations of a SN 2002cx-like peculiar supernova SN 2013en in UGC 11369. https://doi.org/10.1093/mnras%2Fstv1303

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