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Spectroscopic Classification of SN 2017auu as a Young Type II Supernova

ATel #10085; Jujia Zhang, Baoli Lun (YNAO), Zhijian Xu, Wenxiong Li, Xiaofeng Wang(Tsinghua University), Bin Li, Haibin Zhao, Lifan Wang (PMO), Hanjie Tan (Chinese Culture University), Liming Rui, Zesheng Yang (Tsinghua University)
on 17 Feb 2017; 06:36 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 340-860 nm) of SN 2017auu (=PTSS-17fhy),discovered by the PMO-Tsinghua Supernova Survey (PTSS, http://www.cneost.org/ptss/ ), on UT Feb.16.5 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 young type II supernova. 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 1999em at t = -2 days from the maximum light. After correcting for a redshift of 0.0484 for its host galaxy UGC 00969, an expansion velocity of about 10200 km/s can be derived from the absorption minimum of Ha line.