TNS Classification Report No. 8571 [ 2021TNSCR.158....1P ]

Date Received (UTC): 2021-01-15 16:40:42
Sender: Craig Pellegrino
Group: None

Craig Pellegrino (LCO/UCSB), Yael Dgany (TAU), Iair Arcavi (TAU), Jamison Burke (LCO/UCSB), Daichi Hiramatsu (LCO/UCSB), D. Andrew Howell (LCO/UCSB), Curtis McCully (LCO/UCSB), Estefania Padilla Gonzalez (LCO/UCSB) report/s a classification of object: SN 2021ct

Type: SN Ia-91bg-like
Redshift: 0.037

Remarks: Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to 91bg-like SNe Ia ~7 days after maximum light, including SN 2006H. This phase is consistent with the ZTF lightcurve. The supernova is closest to WISEA J144702.66+561851.4, and we measure a redshift of approximately 0.037 based on narrow host galaxy lines present in the spectrum. Adopting this redshift we measure a Si II 6355 velocity of approximately 9000 km/s.

The following Classification spectrum was provided:

Obsdate: 2021-01-14 14:13:12
Instrument: FLOYDS-N
Telescope: Faulkes Telescope North

Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2021ct