Spectroscopic Classification of AT 2019uo as a young Type II Supernova
Jujia Zhang, Lifeng Xing (YNAO); Xiaofeng Wang (THU)
We obtained an optical spectrum (range 350-870 nm) of AT 2019uo, discovered by Koichi Itagaki , on UT Jan.19.9 2019 with the 2.4 m telescope (LJT + YFOSC) at LiJiang Observatory of Yunnan Observatories (YNAO). The spectrum shows very blue continuum and narrow emission features of highly ionized elements (e.g., NV, He II and OV), consistent with that of a type II supernova at a very early phase. Cross-correlation with a library of supernova spectra using the spectral comparison tool Gelato (Harutyunyan et al.,2008, A&A,488, 383) shows that the spectrum matches with SN 1998S at t = +3 days after explosion.
optical,supernovae