Spectroscopic Classification of PSN J17492705+3608360 as a Type II-P Supernova
ATel #7353; Jujia Zhang (Yunnan Observatories), Xiaofeng Wang (Tsinghua University)
on 8 Apr 2015; 01:55 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Tianmeng Zhang (armengjade@gmail.com)
Subjects: Optical, Supernovae, Transient
We report an optical spectrum (range 350-910 nm) of PSN J17492705+3608360 that was obtained on Apr. 07.8 2015 UT with the 2.4-m telescope (+YFOSC) at LiJiang Gaomeigu Station of YNAO. The spectrum is blue and shows broad P-Cygni profiles of Ha and He I 587.6 nm, consistent with that of a type IIP supernova at a few days after explosion. 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 1999gi at t = + 6 days since the explosion. Given a recession velocity of 1369 km/s for the host galaxy UGC 11000, an expansion velocity of about 12000 km/s can be deduced from the Ha absorption minimum.
