Classification certificate for object 2019gcl
TNS Classification Report No. 4179 [ 2019TNSCR.932....1B ]

Date Received (UTC): 2019-06-04 01:04:29
Sender: Jamison Burke
Group: Global SN Project

Jamison Burke, Daichi Hiramatsu, D. Andrew Howell, Curtis McCully, Craig Pellegrino report/s a classification of object: SN 2019gcl

Type: SN Ic-BL
Redshift: 0.0225

Remarks: Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find fits to early SNe Ic-BL. The spectrum displays narrow host emission lines of H I, O II, and O III, from which we measure a redshift of 0.0225. Using this redshift, we measure a Si II velocity of 10,000 km/s. The spectrum displays an extremely broad NIR feature consisting of blended O I and Ca II lines, similar to the spectra of SN 1998bw and SN 2002ap (Foley et al. 2003, PASP, 115, 1120; Mazzali et al. 2002, ApJ, 572, 61). Photometry from LCO and ZTF shows that the object is brightening, so further follow-up is encouraged.

The following Classification spectrum was provided:

Obsdate: 2019-06-01 08:00:20
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/2019gcl