Spectroscopic Classification of 2019bcs as a Type II supernova
ATel #12597; Subhash Bose, Subo Dong (KIAA-PKU), T. G. Brink, A. V. Filippenko (UCB)
on 19 Mar 2019; 17:17 UT
Credential Certification: Subhash Bose (email@subhashbose.com)
We report the spectroscopic observation of optical transient ATLAS19dla/2019bcs on 2019-03-17.19, using the Kast spectrograph mounted on the 3-m Shane telescope at Lick Observatory. The target was discovered by the ATLAS survey (Tonry et al. 2011 and Tonry et al. ATel #8680).
The spectrum is dominated by strong Blamer P-Cygni lines which matches with Type II supernovae during the photospheric phase. The Halpha and Hbeta P-Cygni profiles show shallow absorption components as seen in fast-declining Type II supernovae. Using host galaxy emission lines the estimated redshift is z=0.026.
