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Spectroscopic Classification of SN 2017hk as a Type IIP Supernova

ATel #9983; Jujia Zhang, Chuanjun Wang (YNAO), Xiaofeng Wang, Wenxiong Li, Zesheng Yang, Jun Mo (Tsinghua University), Hanjie Tan (Chinese Culture University), Zhijian Xu, Tianmeng Zhang, and Xu Zhou (NAOC)
on 21 Jan 2017; 06:20 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 330-870 nm) of SN 2017hk, discovered by the Tsinghua-NAOC Transient Survey (TNTS), on UT Jan.20.9 2017 with the 2.4 m telescope (LJT + YFOSC) at LiJiang Gaomeigu Observatory of Yunnan Observatories (YNAO). The spectrum is consistent with that of a type IIP supernova at a few days 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 2006bp at t = +7 days from the maximum light. After correcting for a redshift of 0.059 for its host galaxy KUG 1242+263, an expansion velocity of about 10900 km/s can be derived from the absorption minimum of Ha line.