Optical observations of an SN 2002cx-like peculiar supernova SN 2013en in UGC 11369
Date Issued
2015
Author(s)
Liu, Zheng-Wei
•
Zhang, J. -J.
•
Ciabattari, F.
•
•
Wang, X. -F.
•
Zhao, X. -L.
•
Zhang, T. -M.
•
Xin, Y. -X.
•
Wang, C. -J.
•
Chang, L.
Description
We acknowledge the anonymous referee for valuable comments that helped us to improve the paper. We also acknowledge the support of the staff of Li-Jiang 2.4-m telescope (LJT) and Xinlong 2.16-m telescope. Funding for the LJT has been provided by Chinese Academy of Science (CAS) and the People's Government of Yunnan Province. Partially based on data obtained in Asiago, by the Copernico 1.82-m telescope operated by INAF OAPd. ZWL is supported by the Alexander von Humboldt Foundation. JJZ is supported by the National Natural Science Foundation of China (NSFC, grant 11403096). LT is partially supported by the PRIN-INAF 2011 with the project ‘Transient Universe: from ESO Large to PESSTO’. XFW is supported by the Major State Basic Research Development Program (2013CB834903), the NSFC (grants 11073013, 11178003, 11325313), Tsinghua University Initiative Scientific Research Program and the Strategic Priority Research Program ‘The Emergence of Cosmological Structures’ of the Chinese Academy of Sciences (grant no. XDB09000000).
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.
Volume
452
Issue
1
Start page
838
Issn Identifier
0035-8711
Ads BibCode
2015MNRAS.452..838L
Rights
open.access
File(s)![Thumbnail Image]()
Loading...
Name
stv1303.pdf
Description
paper
Size
910.98 KB
Format
Adobe PDF
Checksum (MD5)
d1ebe8a3cb8811e82b08bc4e1a5cc427