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Spectroscopic Classification of SN 2017aas as a Type Ia Supernova

ATel #10052; Jujia Zhang, Kaixin Lu (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 5 Feb 2017; 03:08 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 340-830 nm) of SN 2017aas (=PTSS-17dib),discovered by the PMO-Tsinghua Supernova Survey (PTSS, http://www.cneost.org/ptss/ ), on UT Feb.04.86 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 Ia supernova at 2-3 weeks 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 1998ab at t = +18 days from the maximum light, with a redshift of about 0.042.