Spectroscopic Classification of SN 2016cdg (=PTSS-16gyb) as a Type Ia Supernova
ATel #9083; Jujia Zhang, Xiangming Zheng (YNAO), Xiaofeng Wang, Wenxiong Li, Zesheng Yang (Tsinghua University), Bin Li, Zhijian Xu, Haibin Zhao, Lifan Wang (PMO)
on 27 May 2016; 07:28 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ju-Jia Zhang (jujia@ynao.ac.cn)
Subjects: Optical, Supernovae
Referred to by ATel #: 9085
We obtained an optical spectrum (range 340-900 nm) of SN 2016cnv (=PTSS-16gif), discovered by the PMO-Tsinghua Supernova Survey (PTSS: http://119.78.210.3/ptss2/ ), on UT May 26.71 2016 with the 2.4 m telescope (LJT + YFOSC) at LiJiang Observatory of Yunnan Observatories (YNAO). The spectrum is consistent with a type Ia supernova at about 2 weeks after the maximum light. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, ApJ, 666, 1024) shows that it matches with SN 2003kf at t = +15 days from the maximum light. After correcting for a redshift of 0.031 for its host galaxy SDSS J155106.04+342551.9, an expansion velocity of about 10000 km/s can be derived from the absorption minimum of Si II 635.5 nm.
