Xinglong 2.16-m Telescope Spectroscopic Classification of SN 2018hck (=ASASSN-18xz) as a Type Ia Supernova
ATel #12085; Hanna Sai, Xiaofeng Wang, Han Lin, Xinhan Zhang, Danfeng Xiang, Liming Rui(Tsinghua University), Huijuan Wang, Tianmeng Zhang (NAOC), Jujia Zhang (YNAO)
on 8 Oct 2018; 15:24 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Xiaofeng Wang (wang_xf@mail.tsinghua.edu.cn)
Subjects: Supernovae, Transient
We obtained an optical spectrum (range 380-840 nm) of SN 2018hck (ASASSN-18xz), discovered by All Sky Automated Survey for Supernova, on UT Oct.7.8 2018 with the Xinglong 2.16-m telescope (+BFOSC) of National Astronomical Observatories of China (NAOC). The spectrum is consistent? with a type Ia supernova at a few days after the maximum light. Cross-correlation? with a library of supernova spectra using the comparison tool "GELATO" (Harutyunyan et al., 2008, A&A, 488, 383) shows that it mathces ?with SN 2005am at t = +7.7 days from the maximum light. After correcting for a redshift of 0.033 for its host galaxy 2MASX J04344671-1329047, an expansion velocity of about 12500 km/s can be derived from the absorption minimum of Si~II 635.5 nm line. Our classification spectrum is also posted on the IAU Transient Name Sever: https://wis-tns.weizmann.ac.il/object/2018hck
