SALT spectroscopic classification of PS16eqv (= SN 2016hjk) as a type-Ia supernova before maximum light
ATel #9682; S. W. Jha, K. Dettman (Rutgers), Y.-C. Pan, R. J. Foley (UCSC), A. Rest (STScI), D. Scolnic (Chicago/KICP), A. Kniazev (SALT/SAAO)
on 27 Oct 2016; 22:40 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Saurabh Jha (saurabh@physics.rutgers.edu)
Subjects: Optical, Supernovae
We obtained SALT (+RSS) spectroscopy of PS16eqv (= SN 2016hjk) on
2016 Oct 27.1 UT, covering the wavelength range 340-920 nm. An
extraction of the spectrum of the host-galaxy nucleus (also placed on the
slit) reveals numerous absorption lines and confirms the redshift of
2MASX J02314347-2500088 at z = 0.085 (Colless et al. 2003, 2dFGRS,
arXiv:astroph/0306581; via NED).
Cross-correlation of the supernova spectrum with a template library
using SNID (Blondin & Tonry 2007, ApJ, 666, 1024) shows PS16eqv is a
SN 1991T-like type-Ia supernova several days before maximum light. A
good SNID match is obtained with SN 1997br at -4 days. The expansion
velocity for PS16eqv, measured to the trough of the weak Si II (rest
635.5 nm) line, is 10,800 km/s.
Our spectrum is posted on the Transient Name
Server SN 2016hjk page.
PS16eqv was discovered as part of the Pan-STARRS Survey for
Transients (Huber et al. 2015, ATel #7153). Information on all PSST
objects is available at http://star.pst.qub.ac.uk/ps1threepi/
