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CSS151219:101935+390048 Is a Type Ia SN About 7 Days Past Maximum

ATel #8527; D. Bersier (LJMU), K. Z. Stanek (OSU)
on 10 Jan 2016; 22:26 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Krzysztof Stanek (stanek.32@osu.edu)

Subjects: Optical, Supernovae

On 2016 Jan 10.055 (UT) we obtained a spectrum of CSS151219:101935+390048 with the Liverpool Telescope equipped with the SPRAT low-resolution spectrograph. A comparison of the spectrum with a library of templates (using SNID, Blondin & Tonry 2007, ApJ, 666, 1024) shows that the object is a type Ia SN, at about 7 days past maximum light. The best match is a 1991-T like object although many good matches are obtained for a normal Ia. The bets fit redshift of the supernova is about 0.038.

CSS151219:101935+390048 was V=16.8 on 2016-01-09.5 in ASAS-SN "Brutus" data (compared to 18.5 CRTS magnitude at discovery on 2015/12/19).