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Spectroscopic Classification of SN 2018yo (= SNhunt353) as a Type IIP Supernova

ATel #11370; Jujia Zhang (YNAO) and Xiaofeng Wang (THU)
on 28 Feb 2018; 21:01 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ju-Jia Zhang (jujia@ynao.ac.cn)

Subjects: Optical, Supernovae

We obtained optical spectra (range 360-870 nm) of SN 2018yo (= SNhunt353), discovered by the Catalina Real-Time Transient Survey Transient Survey and Nikolay Mishevskiy, on UT Feb.28.83 2018 with the 2.4m telescope (+YFOSC) at Lijiang Observatory of YNAO. The spectrum is consistent with that of a type IIP supernova at a few weeks after the maximum light. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J., 666, 1024) shows that it matches with SN 2006bp at t = +25 days from the maximum light. After correcting for a redshift of 0.0134 for its host galaxy UGC 7840, an expansion velocity of about 10000 km/s can be derived from the absorption minimum of Ha line.