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Spectroscopic Classification of 3 SNe with du Pont

ATel #10974; M. R. Drout (Carnegie Obs.), J. L. Prieto (UDP/MAS), S. Dong (KIAA/PKU), B. J. Shappee (IfA Hawaii)
on 15 Nov 2017; 15:19 UT
Credential Certification: Jose L. Prieto (jose.prietok@mail.udp.cl)

Subjects: Optical, Supernovae, Transient

We obtained low-resolution optical spectra (range 3600-9600 Angs., FWHM res ~ 8 Angs.) of the optical transients ASASSN-17ox/AT2017ict, ASASSN-17oy/AT2017icu, ASASSN-17pa/2017icv, and ATLAS17mxj/AT2017hsl on UT 2017 Nov. 15 with WFCCD mounted on the du Pont 2.5m at Las Campanas Observatory. We performed cross-correlation of the spectra with a library of supernova spectra using SNID (Blondin & Tonry 2007, ApJ, 666, 1024). The results are the following:

SN             UT Date     Spec. Type   Phase    Redshift  
ASASSN-17ox   Nov 15.19       Ia         -1      0.095(SN)  
ASASSN-17oy   Nov 15.22       Gal        ---     0.049(host) 
ASASSN-17pa   Nov 15.04       Ia         +3      0.060(SN)                   
AT2017hsl     Nov 15.16       Ia         +20     0.037(SN)