Spectroscopic Classification of SN 2016bla (PTSS-16bwt) as a Type IIP Supernova
ATel #8886; Jujia Zhang, Baoli Lun (YNAO), Xiaofeng Wang, Wenxiong Li, Zesheng Yang (Tsinghua University), Bin Li, Haibin Zhao, Lifan Wang (PMO), Zhijian Xu
on 31 Mar 2016; 01:56 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 330-880 nm) of SN 2016ayg, discovered by the PMO-Tsinghua Supernova Survey (PTSS: http://119.78.210.3/ptss2/ ), on UT Mar.30.6 2016 with the 2.4-m telescope (+YFOSC) at LiJiang Gaomeigu Station of Yunnan Astronomical Observatories (YNAO). The spectrum is consistent with a type IIP supernova at about three weeks after the maximum light, with prominent narrow emission line superimposed on broad Ha emission. 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 2004et at t = +20 days from the maximum light. After correcting for a redshift of 0.023 (from the narrow Ha emission line) for its host galaxy SDSS J074526.98+295326.4, an expansion velocity of about 8500 km/s can be derived from the absorption minimum of Ha line.
