Spectroscopic Classification of SN 2016bll (=PTSS-16ckr) as a Type Ib Supernova
ATel #8908; Liming Rui, Xiaofeng Wang, Wenxiong Li, Zesheng Yang (Tsinghua University), Bin Li, Haibin Zhao, Lifan Wang (PMO), Zhijian Xu, Jujia Zhang (YNAO), Tianmeng Zhang (NAOC)
on 5 Apr 2016; 02:32 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Xiaofeng Wang (wang_xf@mail.tsinghua.edu.cn)
Subjects: Optical, Supernovae, Transient
We obtained an optical spectrum (range 420-860 nm) of SN 2016bll(=PTSS-16ckr), discovered by the PMO-Tsinghua Supernova Survey (PTSS: http://119.78.210.3/ptss2/ ), on UT Apr.04.7 2016 with the 2.16-m telescope (+BFOSC) at Xinglong Station of National Astronomical Observatories of China (NAOC). The spectrum suffered significant contamination of the emission lines from the host galaxy WR 532 (which is a galaxy showing Wolf-Rayet signatures; see J.Brinchmann, D.Kunth, F.Durret,2008, A&A, 485, 657), but is overall similar to a type Ib supernova at around the maximum light. After correcting for a redshift of 0.0191 for its host galaxy, an expansion velocity of about 9700 km/s can be derived from the absorption minimum of He I 587.6 line.
