Spectroscopic Classification of SN 2016cck (=PTSS-16efw) as a Type Ia Supernova
ATel #9025; Jujia Zhang, Jianguo Wang (YNAO), Xiaofeng Wang, Wenxiong Li, Zesheng Yang (Tsinghua University), Bin Li, Zhijian Xu, Haibin Zhao, Lifan Wang (PMO)
on 6 May 2016; 01:08 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ju-Jia Zhang (jujia@ynao.ac.cn)
Subjects: Optical, Supernovae
We obtained an optical spectrum (range 340-900 nm) of SN 2016cck (=PTSS-16efw), discovered by the PMO-Tsinghua Supernova Survey (PTSS: http://119.78.210.3/ptss2/ ), on UT May 05.8 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 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 2007af at t = +0 days from the maximum light. This is consistent with the report of ATel#9023 about this transient (i.e., SN1999cc at t = -1 days). After correcting for a redshift of 0.037 for its host galaxy (from the H alpha emission near the SN), an expansion velocity of about 11000 km/s can be derived from the absorption minimum of Si II 635.5 nm.
