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Classification of ASASSN-17em/AT2017cts

ATel #10242; David Bersier (Liverpool John Moores University)
on 4 Apr 2017; 09:05 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: David Bersier (dfb@astro.livjm.ac.uk)

Subjects: Optical, Supernovae

Referred to by ATel #: 10251

We obtained a spectrum of the candidate supernova ASASSN-17em/AT2017cts (ATEL #10241), using the SPRAT spectrograph mounted on the robotic 2m Liverpool Telescope at the Roque de los Muchachos observatory (La Palma). The spectral range is 400-800 nm and the dispersion is 9.2 Angstrom/pixel. Observations started on 2017 Apr 4.132 (UT). Classification with SNID (Blondin and Tonry 2007, ApJ, 666, 1024) indicates that this is a normal type Ia supernova a few days before maximum light at a redshift around 0.020. The spectrum is available on the Transient Name Server.

Liverpool Telescope