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Asiago spectroscopic classification of PS15cyk

ATel #8355; L. Tartaglia, A. Pastorello, S. Benetti, E. Cappellaro, N. Elias-Rosa, P. Ochner, G. Terreran, L. Tomasella, M. Turatto (INAF OAPd)
on 3 Dec 2015; 07:15 UT
Credential Certification: Lina Tomasella (lina.tomasella@oapd.inaf.it)

Subjects: Optical, Supernovae

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of PS15cyk in UGC 12687. The target is supplied by the Pan-STARRS Survey for Transients (see Huber et al., ATel #7153).

The observation was performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.35 nm).

Name                  | Earliest detection  |   Obs. Date UT   |   z     |   Type    |  Phase    | Notes 
PS15cyk               | 20151125.30         | 20151202.79      | 0.020541|     II    | 1 month   | (1)  

(1) The spectrum shows the typical features of a Type II SN during the hydrogen recombination phase, and show striking similarity with the Type II-P SN 1999gi about 1 month after maximum. Along with the prominent Halpha with a P-Cygni profile, we clearly detect Hbeta, Na ID, Fe II, Sc II, and Ca II H&K. The expansion velocity inferred from the position of the Halpha absorption is about 6800 km/s.

Classification was done with GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024). The Asiago classification spectra are posted at the website http://sngroup.oapd.inaf.it. Â

Padova-Asiago SN Group