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Spectroscopic Classification of MASTER OT J110533.80+194118.7 as a Type Ia Supernova

ATel #9687; Danfeng Xiang, Linyi Li, Kaicheng Zhang, Xiaofeng Wang, and Liming Rui (Tsinghua University), and Tianmeng Zhang (NAOC)
on 29 Oct 2016; 15:41 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 370-860 nm) of MASTER OT J110533.80+194118.7, discovered by the MASTER Transient Survey, on UT Oct.28.9 2016 with the 2.16m telescope (+BFOSC) at Xinglong Observatory of NAOC. The spectrum is consistent with a type Ia supernova at about two 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 2006te at t = +12 days from the maximum light. After correcting for a redshift of 0.027 for its host galaxy PGC 1602017 (from the SNID fit), an expansion velocity of about 10100 km/s can be derived from the absorption minimum of Si II 635.5 nm.