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Spectroscopic classification of SN 2017hjs as a Ia supernova

ATel #10858; M. Berton (INAF OAPd), G. Terreran (Northwestern University)
on 16 Oct 2017; 23:17 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Marco Berton (marco.berton@unipd.it)

Subjects: Optical, Supernovae

We report the spectroscopic classification of SN 2017hjs, discovered by the Tsinghua-NAOC Transient Survey (TNTS) in 2MASX J23290997+2809164.

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 |  IAU Name  |   Discovery date    | Discovery mag |   z    |  Type  | Phase  | Notes 
AT 2017hjs  | SN 2017hjs | 2017-10-14 05:31:12 |      18.8.    | 0.096  |   Ia   | at Max | (1)    

(1) The spectrum is consistent with that of a normal Type Ia SN around maximum light, at a redshift 0.096 (retrieved from SNID). The expansion velocity deduced from the Si II 635.5 nm absorption is about 11000 km/s.

The classification was done with GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024).