Classification certificate for object 2019cad
TNS Classification Report No. 3718 [ 2019TNSCR.427....1B ]

Date Received (UTC): 2019-03-22 20:54:48
Sender: Jamison Burke
Group: Global SN Project

Jamison Burke, Daichi Hiramatsu, Iair Arcavi, D. Andrew Howell, Curtis McCully, Stefano Valenti report/s a classification of object: SN 2019cad

Type: SN Ic
Redshift: 0.026762

Remarks: Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find several good fits to Type Ic-norm supernovae around maximum light. We take the redshift to be 0.026762 (value from NED, consistent with fits). The lightcurve of the object from ZTF shows it is was still brightening on March 20 at magnitude 18.75 (absolute magnitude -16.6), which could be slightly sub-luminous for a SN Ic. We measure the expansion velocity of the Ca NIR triplet to be 12,000 km/s.

The following Classification spectrum was provided:

Obsdate: 2019-03-22 08:40:41
Instrument: FLOYDS-N
Telescope: Faulkes Telescope North

Details of the object and its spectra can be viewed here: https://wis-tns.weizmann.ac.il/object/2019cad