Classification certificate for object 2017grw
TNS Classification Report No. 1212 [ 2017TNSCR1002....1H ]

Date Received (UTC): 2017-09-14 21:38:36
Sender: Dr. Griffin Hosseinzadeh
Group: Global SN Project

Griffin Hosseinzadeh, Iair Arcavi, D. Andrew Howell, Curtis McCully, Stefano Valenti report/s a classification of object: SN 2017grw

Type: SN Ia
Redshift: 0.017

Remarks: Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find several good fits to the normal Type Ia supernovae in the week before maximum light at redshifts consistent with that of the proposed host galaxy (z=0.017; Barmby & Huchra 1998, AJ, 115, 6 via NED). The supernova is highly extinguished by its host galaxy, making a more precise phase estimate difficult.

The following Classification spectrum was provided:

Obsdate: 2017-09-14 06:34:46
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/2017grw