Spectroscopic Classification of SN 2016fnb (=PTSS-16mxs) as a Type II-P Supernova
ATel #9438; Liming Rui, Xiaofeng Wang, Wenxiong Li, Zesheng Yang (Tsinghua Univeristy), Bin Li, Zhijian Xu, Lifan Wang, Haibin Zhao (PMO), Junjun Jia, Tianmeng Zhang (NAOC)
on 31 Aug 2016; 16:33 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 380-860 nm) of SN 2016fnb (= PTSS-16mxs), discovered by PMO-Tsinghua Supernova Survey (PTSS; http://119.78.210.3/ptss2/ ), on UT Aug.30.75 2016 with the 2.16-m telescope (+BFOSC) at Xinglong Station of National Astronomical Observatories of China (NAOC). The spectrum is consistent with that of a type IIP supernova at a few days after the maximum light, showing prominent P-Cygni profiles of Balmer lines. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J., 666, 1024) shows that it matches with SN 1999em at t=+5 days from the peak. After correcting for a redshift of 0.025 for its host galaxy FGC 2436, an expansion velocity of about 9700 km/s can be derived from the absorption minimum of Ha.
