SALT spectroscopic classification of PS15aii as a type-Ia supernova
ATel #7486; S. W. Jha (Rutgers), Y.-C. Pan, R. J. Foley (Illinois), A. Rest (STScI), D. Scolnic (Chicago/KICP), K. W. Smith, D. Wright, S. J. Smartt (QUB), M. Huber, K. C. Chambers, H. Flewelling, M. Willman, N. Primak, A. Schultz, B. Gibson, E. Magnier, C. Waters, J. Tonry, R. J. Wainscoat (IfA, Hawaii)
on 9 May 2015; 05:05 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 PS15aii in VCC 2005 (Wright et al. 2015, ATel #7484) on 2015 May 8.8 UT, covering the wavelength range 400-900 nm. Cross-correlation of the spectrum with a template library using SNID (Blondin & Tonry 2007, ApJ, 666, 1024) shows PS15aii to be a normal type-Ia supernova a few days before maximum light. Adopting the host galaxy redshift z = 0.046589 (Kent et al. 2008, AJ, 136, 713, via NED), yields an expansion velocity for the Si II (rest 635.5 nm) feature of 10,600 km/s.
