LJT spectroscopic classification of AT2020bee as a young Type Ic supernova with an expansion velocity of ~ 30,000 km/s
ATel #15882; Qian Zhai, Jujia Zhang (YNAO); Liping Li (Yunnan Unversity); Xiaofeng Wang (THU)
on 1 Feb 2023; 20:34 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ju-Jia Zhang (jujia@ynao.ac.cn)
Subjects: Optical, Supernovae, Transient
We report an optical spectrum of AT 2023bee (350-870nm) obtained on 2023 Feb. 01.75 UT with the Lijiang 2.4-m telescope (LJT +YFOSC) at Lijiang observatory of Yunnan Observatories. The spectrum is similar to the type Ic supernovae in the early phase. Cross-correlation with the library of supernova spectra using the comparison tool SNID (Blondin and Tonry 2007, ApJ, 666, 1024) shows that it matches the fairly peculiar type Ic supernova PTF12gzk = -10 days at the given redshift = 0.0067 of the host galaxy NGC 2708. The expansion velocity of this SN, derived from Si II 6355 and Ca II IRT, is about 28,000 - 32,000 km/s.
