Classification certificate for object 2018gtg
TNS Classification Report No. 2802 [ 2018TNSCR1438....1P ]

Date Received (UTC): 2018-09-23 14:22:22
Sender: Dr. Simon Prentice
Group: None

S. J. Prentice, K. W. Smith (QUB) report/s a classification of object: SN 2018gtg

Type: SN Ia
Redshift: 0.108

Remarks: Classification was attempted with both DASH (https://github.com/daniel-muthukrishna/astrodash) and Gelato (Harutyunyan et al., 2008, A&A, 488, 383), matches were found with SNe Ia a few days before maximum light at redshifts between 0.09 and 0.11. The best fit model of was 91T-like SN 1998es at z = 0.108 although confidence in this result is limited by the low S/N of the classification spectrum.

The following Classification spectrum was provided:

Obsdate: 2018-09-21 23:56:32
Instrument: SPRAT
Telescope: Liverpool Telescope

Details of the object and its spectra can be viewed here: https://wis-tns.weizmann.ac.il/object/2018gtg