TNS Classification Report No. 6340 [ 2020TNSCR.704....1P ]
Date Received (UTC): 2020-03-03 01:05:47 Sender: Daniel Perley
Group: ZTF
Daniel Perley (LJMU), Lin Yan (Caltech), Steve Schulze (Weizmann), Igor Andreoni, Yuhan Yao (Caltech), Ting-Wan Chen (Stockholm) report/s a classification of object: SN 2019zcr
Type: SLSN-IIRedshift: 0.259
Remarks: Spectra taken with the Double-Beam Spectrograph on the Palomar 200-inch telescope on 2020 Jan 28 and 2020 Feb 25 show a hot blue continuum largely devoid of features. However, intermediate-width emission lines at wavelengths consistent with H-alpha and H-beta a redshift of z~0.26 are visible in each spectrum, along with weak narrow absorption from Mg II at z=0.259. Based on the presence of hydrogen we classify this as a SLSN-II, but given the weakness of this feature it may be more closely related to SLSNe-I. Further observations are planned to secure the subclassification and redshift. This event is currently at or just after peak (apparent mag r=17.8, or absolute mag M_g ~ -22.5), following a rise time of at least 50 days.
The following Classification spectrum was provided:
Obsdate: 2020-01-28 00:00:00
Instrument: DBSP
Telescope: Palomar 5.1m Hale
Remarks: The feature at 5500 Angstroms is likely an artifact of the red+blue attachment across the dichroic.
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2019zcr
Date Received (UTC): 2020-03-03 01:05:47 Sender: Daniel Perley
Group: ZTF
Daniel Perley (LJMU), Lin Yan (Caltech), Steve Schulze (Weizmann), Igor Andreoni, Yuhan Yao (Caltech), Ting-Wan Chen (Stockholm) report/s a classification of object: SN 2019zcr
Type: SLSN-IIRedshift: 0.259
Remarks: Spectra taken with the Double-Beam Spectrograph on the Palomar 200-inch telescope on 2020 Jan 28 and 2020 Feb 25 show a hot blue continuum largely devoid of features. However, intermediate-width emission lines at wavelengths consistent with H-alpha and H-beta a redshift of z~0.26 are visible in each spectrum, along with weak narrow absorption from Mg II at z=0.259. Based on the presence of hydrogen we classify this as a SLSN-II, but given the weakness of this feature it may be more closely related to SLSNe-I. Further observations are planned to secure the subclassification and redshift. This event is currently at or just after peak (apparent mag r=17.8, or absolute mag M_g ~ -22.5), following a rise time of at least 50 days.
The following Classification spectrum was provided:
Obsdate: 2020-01-28 00:00:00
Instrument: DBSP
Telescope: Palomar 5.1m Hale
Remarks: The feature at 5500 Angstroms is likely an artifact of the red+blue attachment across the dichroic.
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2019zcr