ASASSN-16hr Is a Type Ia SN Before Maximum
ATel #9273; D. Bersier (LJMU)
on 28 Jul 2016; 09:26 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Subo Dong (dongsubo@pku.edu.cn)
Subjects: Optical, Supernovae
We obtained a spectrum of the candidate supernova ASASSN-16hr/AT 2016eja (ATel #9270) with the SPRAT spectrograph mounted on the robotic 2m Liverpool Telescope at the Roque de los Muchachos observatory (La Palma). Observations started on 2016 Jul 27 (UT). The spectral range is 400-800 nm and the dispersion is 9.2 Angstrom/pixel.
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 0.03. The best fit is with SN 2006cp 10 days before maximum light, at a redshift z=0.040.
An emission line is clearly visible in the 2D image. Identifying this line with H alpha yields a redshift for the host galaxy of z=0.030.
