TNS Classification Report No. 9703 [ 2021TNSCR1716....1G ]
Date Received (UTC): 2021-05-19 18:51:17 Sender: Sebastian Gomez
Group: FLEET
Sebastian Gomez, Griffin Hosseinzadeh, Edo Berger (Harvard CfA) Peter Blanchard (Northwestern) report/s a classification of object: SN 2021gtr
Type: SLSN-IRedshift: 0.303
Remarks: 2021gtr was selected as part of our FLEET effort to find superluminous supernovae with a P(SLSN-I) = 0.43 (Gomez et al., 2020, ApJ, 904, 74) and classified using template matching with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). The best match is to SNe Ic, but at the redshift of z = 0.303 (determined from weak host emission lines) the absolute peak magnitude is around -20.8, suggesting the object is a SLSN-I.
The following Classification spectrum was provided:
Obsdate: 2021-05-19 00:00:00
Instrument: BINOSPEC
Telescope: MMT Observatory 6.5m
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2021gtr
Date Received (UTC): 2021-05-19 18:51:17 Sender: Sebastian Gomez
Group: FLEET
Sebastian Gomez, Griffin Hosseinzadeh, Edo Berger (Harvard CfA) Peter Blanchard (Northwestern) report/s a classification of object: SN 2021gtr
Type: SLSN-IRedshift: 0.303
Remarks: 2021gtr was selected as part of our FLEET effort to find superluminous supernovae with a P(SLSN-I) = 0.43 (Gomez et al., 2020, ApJ, 904, 74) and classified using template matching with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). The best match is to SNe Ic, but at the redshift of z = 0.303 (determined from weak host emission lines) the absolute peak magnitude is around -20.8, suggesting the object is a SLSN-I.
The following Classification spectrum was provided:
Obsdate: 2021-05-19 00:00:00
Instrument: BINOSPEC
Telescope: MMT Observatory 6.5m
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2021gtr