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SALT spectroscopic classification of SN 2017azk (= PS17bii) as a type-Ia supernova near maximum light

ATel #10124; S. W. Jha, K. Dettman (Rutgers), Y.-C. Pan, R. J. Foley (UCSC), A. Rest (STScI), D. Scolnic (Chicago/KICP), P. Vaisanen (SALT/SAAO)
on 24 Feb 2017; 18:56 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 SN 2017azk (= PS17bii) on 2017 Feb 24.0 UT, covering the wavelength range 340-920 nm. Cross-correlation of the supernova spectrum with a template library using SNID (Blondin & Tonry 2007, ApJ, 666, 1024) shows SN 2017azk is a type-Ia supernova near maximum light. A good SNID match is obtained with SN 2006S at -3 days, though other SNID matches range in phase from approximately -5 to +5 days. Adopting a redshift z = 0.07339 (SDSS DR13) for the host galaxy, the expansion velocity for SN 2017azk, measured to the trough of the Si II (rest 635.5 nm) line, is 10,400 km/s.

Our spectrum is posted on the Transient Name Server SN 2017azk page.