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Spectroscopic Classification of ASASSN-14jb as a Type IIP Supernova

ATel #6601; Jujia Zhang (Yunnan Observatories) and Xiaofeng Wang(Tsinghua University)
on 21 Oct 2014; 01:04 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Xiaofeng Wang (wang_xf@mail.tsinghua.edu.cn)

Subjects: Optical, Supernovae, Transient

We report an optical spectrogram (range 350-910 nm) of ASASSN-14jb that was obtained on 2014 Oct. 20.52 UT with the 2.4-m telescope (+YFOSC) at LiJiang Gaomeigu Station of Yunnan Observatories. The spectrum shows that ASASSN-14jb is a type II-P supernova at a relatively young phase. Cross-correlation with a library of supernova spectra using the comparison tool Gleato (Harutyunyan et al. 2008, A&A, 488, 383) shows that it matches with SN 1999gi at t = +4 days relative to the explosion date. Given a redshift of 0.006 for the host galaxy ESO 467-G051 (Springob et al. 2005, ApJ.Supp., 160, 149), an expansion velocity of about 10600 km/s can be deduced from the Ha absorption.