Classification certificate for object 2019tua
TNS Classification Report No. 5419 [ 2019TNSCR2244....1B ]

Date Received (UTC): 2019-11-01 23:10:17
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 2019tua

Type: SN II
Redshift: 0.010424

Remarks: Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe II at early phases. There are good fits to SN 1987A at extremely early phases and also to SN 1996cb (SN IIb) more than two weeks before maximum. The supernova is closest to UGC 11860 (z = 0.010424, 1998A&AS..130..333T; value from NED). This redshift is well-matched by narrow host hydrogen and O II emission lines. Assuming this redshift, we measure a hydrogen velocity of about 17,000 km/s from the Hα absorption and a similar He velocity from He 5876. The B-band absolute magnitude roughly coeval with the spectrum is approximately -15.1 (apparent magnitude 18.2). The absolute magnitude, high velocities, and blue continuum indicate that the SN is young. Further followup is encouraged.

The following Classification spectrum was provided:

Obsdate: 2019-11-01 09:07:20
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/2019tua