Classification certificate for object 2019tdw
TNS Classification Report No. 5390 [ 2019TNSCR2221....1M ]

Date Received (UTC): 2019-10-29 16:10:18
Sender: Dr. Ismael Perez-Fournon
Group: None

R. Marques-Chaves (CAB), I. Perez-Fournon, C. Jimenez Angel, F. Poidevin, and R. Shirley (IAC & ULL), S. Geier (GRANTECAN & IAC), Y. Shu (IoA), S. Rodney, J. Roberts-Pierel (Univ. of South Carolina), A. Bolton (NSF OIR Lab), S. Chakrabarti, P. Craig, and B. Alamiri (RIT) report/s a classification of object: SN 2019tdw

Type: SN Ia
Redshift: 0.1

Remarks: SN Ia-norm close to maximum. Classification using SNID (S. Blondin & J. L. Tonry 2007, ApJ, 666, 1024). The likely host galaxy of the SN is SDSS J092736.27+370032.9, a Luminous Red Galaxy at a spectroscopic redshift z= 0.0961734 +/- 0.0000179 (SDSS DR15).

The following Classification spectrum was provided:

Obsdate: 2019-10-29 05:14:13
Instrument: SPRAT
Telescope: Liverpool Telescope

Details of the object and its spectra can be viewed here: