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Asiago spectroscopic classification of ASASSN-17qz

ATel #11078; S. Benetti, E. Cappellaro, L. Tomasella, M. Turatto (INAF-OAPd), V. Nascimbeni (UniPd-DFA)
on 21 Dec 2017; 09:19 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 ASASSN-17qz (SN 2017iyw), bright candidate SN in galaxy VII Zw 218.

The observation was performed with the Asiago 1.82 m Copernico Telescope equipped with AFOSC (range 340-820 nm; resolution 1.4 nm).

 
 
Survey Name   | IAI Name      | Discovery date (UT)  | Discovery mag | Observation (UT)    |  Type  | z           | Notes| 
ASASSN-17qz   | SN 2017iyw    |  2017-10-18 07:12:00 | g-Sloan=15.9  |2017-10-20 19:45:00  |   Ia   |  0.0215     | (1)  | 
 
 

(1) Good matches are obtained with normal Type Ia SNe around maximum light at redshift z~0.0215. Adopting this redshift, the expansion velocity deduced from the SiII 635.5 nm line is about 10900 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.

Padova-Asiago SN group