Spectroscopic classification of PSP19B (AT 2019bqe) as a young type Ia supernova
ATel #12571; Jujia Zhang, Xiliang Zhang (YNAO); Xiaofeng Wang (THU)
on 13 Mar 2019; 12:26 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ju-Jia Zhang (jujia@ynao.ac.cn)
Subjects: Optical, Supernovae
We report an optical spectrum (range 350-870 nm) of PSP19B (AT 2019bqe), discovered by the XOSS, obtained on UT 2019-03-12.71 with the 2.4m telescope (+YFOSC) at LiJiang Observatory of Yunnan Observatories (YNAO). The spectrum is consistent with that of a type Ia supernova at a few days before the maximum light. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, ApJ, 666, 1024) shows that it matches with SN 1999ee at t = -7 days from the maximum light. After correcting for a redshift 0.017 of the host galaxy NGC 3074, an expansion velocity of about 18000 km/s can be derived from the absorption minimum of Si II 635.5 nm.
