TNS Classification Report No. 12691 [ 2022TNSCR1756....1D ]
Date Received (UTC): 2022-06-24 04:52:20 Sender: Samaporn Tinyanont
Group: None
K. W. Davis, S. Tinyanont, R. J. Foley (UCSC), R. Chornock (UCB) report/s a classification of object: SN 2022mxv
Type: SN IIRedshift: 0.014046
Remarks: We detect a continuum in the NIR with emission lines from H Brackett gamma (2.17 micron), Paschen beta (1.28 micron) and Paschen gamma (1.09 micron), as well as He I 1.083 micron. The lines have Lorentzian profiles with the FWHM ~ 2000 km/s (fitted from the isolated Paschen beta line), indicating that the lines may be forming in the ionized CSM. We also detect an absorption likely from the He I 2.06 micron line at -500 km/s. The redshift is of the host galaxy NGC 7769 obtained from NED.
The following Classification spectrum was provided:
Obsdate: 2022-06-22 00:00:00
Instrument: NIRES
Telescope: Keck II 10m
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2022mxv
Date Received (UTC): 2022-06-24 04:52:20 Sender: Samaporn Tinyanont
Group: None
K. W. Davis, S. Tinyanont, R. J. Foley (UCSC), R. Chornock (UCB) report/s a classification of object: SN 2022mxv
Type: SN IIRedshift: 0.014046
Remarks: We detect a continuum in the NIR with emission lines from H Brackett gamma (2.17 micron), Paschen beta (1.28 micron) and Paschen gamma (1.09 micron), as well as He I 1.083 micron. The lines have Lorentzian profiles with the FWHM ~ 2000 km/s (fitted from the isolated Paschen beta line), indicating that the lines may be forming in the ionized CSM. We also detect an absorption likely from the He I 2.06 micron line at -500 km/s. The redshift is of the host galaxy NGC 7769 obtained from NED.
The following Classification spectrum was provided:
Obsdate: 2022-06-22 00:00:00
Instrument: NIRES
Telescope: Keck II 10m
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2022mxv