Classification certificate for object 2020zlc
TNS Classification Report No. 8031 [ 2020TNSCR3499....1B ]

Date Received (UTC): 2020-11-18 00:19:35
Sender: Jamison Burke
Group: Global SN Project

Jamison Burke (LCO/UCSB), Yael Dgani, Iair Arcavi (TAU), Daichi Hiramatsu (LCO/UCSB), D. Andrew Howell, Curtis McCully, Estefania Padilla Gonzalez, Craig Pellegrino report/s a classification of object: SN 2020zlc

Type: SN Ia
Redshift: 0.076388

Remarks: Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe Ia near maximum light, including SN 2006cf 3 days after peak. The supernova is closest to WISEA J094122.57+155741.1 (z = 0.076388; 2011ApJ...735..125S; value from NED). Adopting this redshift we measure a Si II 6355 velocity of approximately 11,000 km/s. Adopting the distance modulus computed from this redshift (37.6), the g-band absolute magnitude of the object roughly coeval with the spectrum is -18.9 (apparent magnitude 18.8, from ZTF), ignoring host reddening. The absolute magnitude and Si II velocity corroborate this object’s classification as a Ia near max.

The following Classification spectrum was provided:

Obsdate: 2020-11-16 12:13:01
Instrument: FLOYDS-N
Telescope: Faulkes Telescope North

Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2020zlc