Spectrocopic Identification of PNV J01315945+3328458 as a type IIP Supernova
ATel #8120; Jujia Zhang(Yunnan Observatories) and Xiaofeng Wang (Tsinghua University)
on 5 Oct 2015; 06:33 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Xiaofeng Wang (wang_xf@mail.tsinghua.edu.cn)
Subjects: Optical, Supernovae, Transient
We obtained an optical spectrum (range 350-890 nm) of PNV J01315945+3328458 on UT 2015 Oct.03.7 with the 2.4-m telescope (+YFOSC) at LiJiang Gaomeigu Station of Yunnan Observatories. The spectrum is similar to that of a type II supernova at a young phase, with prominent broad P-Cygni profiles of Balmer lines. Cross-correlation with a library of supernova spectra using the comparison tool SNID (Blondin and Tonry 2007, ApJ, 666, 1024) and GELATO (Harutyunyan et al. 2008, A&A,488, 383) shows that it matches with some type II-P supernovae at a few days after explosion. The presence of narrow P-Cygni profiles of Balmer lines suggests that the hydrogen-rich materials were blown from the progenitor immediately before the explosion. Given a redshift of 0.0145 for its host galaxy NGC 582, the broad component of the Ha absorption minimum has a velocity of 8500 km/s and the narrow component has a velocity of about 600 km/s.
