TNS Classification Report No. 12463 [ 2022TNSCR1341....1N ]
Date Received (UTC): 2022-05-18 19:19:47 Sender: Megan Newsome
Group: Global SN Project
Megan Newsome (LCO/UCSB), Wenxiong Li (TAU), Jamison Burke (LCO/UCSB), D. Andrew Howell, Curtis McCully, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran report/s a classification of object: SN 2022juw
Type: SN IIRedshift: 0.028
Remarks: Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe II, specifically SN 2005cs (SN IIP), one day before maximum. The supernova is closest to SDSS J083031.36+181207.5 (z = 0.010424, 2016SDSSD.C...0000; value from NED). This redshift is well-matched by narrow host hydrogen emission lines. Assuming this redshift, we measure a Hα absorption velocity of about 20,000 km/s and a similar He velocity from He 5876. The B-band absolute magnitude roughly coeval with the spectrum is approximately -17.5 (apparent magnitude 17.99). The absolute magnitude, high velocities, and blue continuum indicate that the SN is young or near peak.
The following Classification spectrum was provided:
Obsdate: 2022-05-14 05:49:29
Instrument: FLOYDS-N
Telescope: Faulkes Telescope North
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2022juw
Date Received (UTC): 2022-05-18 19:19:47 Sender: Megan Newsome
Group: Global SN Project
Megan Newsome (LCO/UCSB), Wenxiong Li (TAU), Jamison Burke (LCO/UCSB), D. Andrew Howell, Curtis McCully, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran report/s a classification of object: SN 2022juw
Type: SN IIRedshift: 0.028
Remarks: Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe II, specifically SN 2005cs (SN IIP), one day before maximum. The supernova is closest to SDSS J083031.36+181207.5 (z = 0.010424, 2016SDSSD.C...0000; value from NED). This redshift is well-matched by narrow host hydrogen emission lines. Assuming this redshift, we measure a Hα absorption velocity of about 20,000 km/s and a similar He velocity from He 5876. The B-band absolute magnitude roughly coeval with the spectrum is approximately -17.5 (apparent magnitude 17.99). The absolute magnitude, high velocities, and blue continuum indicate that the SN is young or near peak.
The following Classification spectrum was provided:
Obsdate: 2022-05-14 05:49:29
Instrument: FLOYDS-N
Telescope: Faulkes Telescope North
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2022juw