LJT Spectroscopic Classification of PTSS-19cmsa(AT2019fzl) as a Type Ia Supernova
ATel #12810; J.-J., Zhang, K.-X., Lu, J.-M., Bai (YNAO); H.-J., Tan(NCU); W.-X., Li(THU), B., Li(PMO); Z.-J., Xu; X.-F., Wang(THU), H-B., Zhao(PMO); L.-F., Wang(PMO/TAMU)
on 28 May 2019; 14:54 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ju-Jia Zhang (jujia@ynao.ac.cn)
Subjects: Optical, Supernovae
We obtained an optical spectrum (range 350-880 nm) of PTSS-19cmsa(AT2019fzl), discovered by the PMO-Tsinghua Supernova Survey (PTSS), on UT May 27.73 2019 with the Lijiang 2.4-m telescope (LJT + YFOSC) at the Lijiang Observatory of Yunnan Observatories (YNAO). The spectrum is consistent with a type Ia supernovae around the maximum light. Cross-correlation with the comparison tool GELATO (Harutyunyan et al. 2008, A&A, 488, 383, https://gelato.tng.iac.es) shows that it matches with SN 1981B at t = +0.7 days from the maximum light. After correcting for a redshift of 0.08346 (via SDSS) for its host galaxy SDSS J152706.83+023430.7, an expansion velocity of about 12000 km/s can be derived from the absorption minimum of Si II 635.5 nm line.
It is the 200th supernovae candidates classified by LJT+YFOSC. We acknowledge the support of the staff of the LJT. Funding for the LJT has been provided by the Chinese Academy of Sciences and the People's Government of Yunnan Province.
