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Spectroscopic Classification of SN 2016hvu as a Young Type IIP Supernova

ATel #9746; Jujia Zhang, Yuxin Xin (YNAO), Danfeng Xiang, Liming Rui, Xiaofeng Wang (Tsinghua University), Tianwen Cao, Huijuan Wang, and Tianmeng Zhang (NAOC)
on 12 Nov 2016; 06:26 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Xiaofeng Wang (wang_xf@mail.tsinghua.edu.cn)

Subjects: Optical, Supernovae, Transient

We obtained optical spectra (range 360-870 nm) of SN 2016hvu, discovered by the Catalina Real-Time Transient Survey Transient Survey, on UT Nov.08.5 with the 2.16m telescope (+BFOSC) at Xinglong Observatory of NAOC and on UT Nov.11.7 2016 with the 2.4m telescope (+YFOSC) at Lijiang Observatory of YNAO. The spectra suffered significant contaminations of narrow emissions from the host galaxy (see also ATel #9744). After manual removing of the narrow emission lines, the spectrum taken on UT Nov.11.7 2016 is found to be consistent with that of a type IIP supernova at around 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 the spectrum matches with SN 2006bp at t = +2 days from the maximum light. After correcting for a redshift of 0.0185 for its host galaxy NGC 7316, an expansion velocity of about 11000 km/s can be derived from the absorption minimum of Ha.