LJT Spectroscopic Classification of PTSS-20hk (AT2020iic) as a Type Ibn Supernova
ATel #13700; Jujia Zhang(YNAO), Zhijian Xu, Bin Li (PMO), Wenxiong Li (THU), Hanjie Tan(NCU), Xiaofeng Wang(THU), Haibin Zhao(PMO), Lifan Wang (PMO/TAMU)
on 3 May 2020; 08:47 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 350-870 nm) of PTSS-20hk (AT2020iic), discovered by PTSS, on UT 2020 May 02.7 with the Li-Jiang 2.4 m telescope (LJT+YFOSC) at the Li-Jiang Observatory of Yunnan Observatories. The blue spectrum is dominated by the emission of He I 5876. The emission of He I 5016 is also presented in the spectrum. These look like the typical feature of SNe Ibn at a relatively early phase. Cross-correlation with the comparison tool GELATO (Harutyunyan et al. 2008, A&A, 488, 383, https://gelato.tng.iac.es) shows that it matches with SN Ibn 2005la at t = +17.5 days after the maximum.
