TNS Classification Report No. 9981 [ 2021TNSCR2271....1P ]

Date Received (UTC): 2021-07-01 19:50:49
Sender: Ismael Perez-Fournon
Group: SGLF

F. Poidevin, I. Perez-Fournon, C. Jimenez Angel (IAC & ULL), R. Shirley (Univ. of Southampton), R. Marques-Chaves (Univ. of Geneva), S. Geier (GRANTECAN & IAC), Y. Shu (MPA), S. Rodney, J. Roberts-Pierel (Univ. of South Carolina), A. Bolton (NSF's NOIRLab), S. Chakrabarti, P. Craig, and B. Alamiri (RIT) report/s a classification of object: SN 2021mkr

Type: SLSN-I
Redshift: 0.28

Remarks: SLSN-I at z=0.28. It was selected as a SLSN candidate for LT SPRAT spectroscopy using the ZTF public alerts. The rising time at the time of the spectroscopic observations was > 45 days since the first ZTF detection on 2021-05-15 07:20:06. Classification using SNID (S. Blondin & J. L. Tonry 2007, ApJ, 666, 1024).

The following Classification spectrum was provided:

Obsdate: 2021-06-29 23:15:05
Instrument: SPRAT
Telescope: Liverpool Telescope

Details of the object and its spectra can be viewed here: https://sandbox.wis-tns.org/object/2021mkr