TNS Classification Report No. 15408 [ 2023TNSCR1999....1N ]
Date Received (UTC): 2023-08-17 17:11:12 Sender: Megan Newsome
Group: Global SN Project
Megan Newsome (LCO/UCSB), Craig Pellegrino, Joseph Farah, D. Andrew Howell, Curtis McCully, Estefania Padilla Gonzalez, Giacomo Terreran report/s a classification of object: SN 2023pls
Type: SN IIRedshift: 0.0136
Remarks: Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe II near peak. There are good fits to SN 2005cs (SN IIP) and SN 2004et (SN IIP) within 5 days of maximum light. The supernova is closest to UGC 09002 (z = 0.0136, 2006HIPAS.C...0000; value from NED). This redshift is well-matched by narrow host hydrogen. Assuming this redshift, we measure a hydrogen velocity of about 12,000 km/s from Hα. The g-band absolute magnitude roughly coeval with the spectrum is approximately -16.65 (apparent magnitude 17.23). The absolute magnitude, high velocities, and blue continuum indicate that the SN is young. Further followup is encouraged.
The following Classification spectrum was provided:
Obsdate: 2023-08-16 08:34:22
Instrument: FLOYDS-S
Telescope: Faulkes Telescope South
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2023pls
Date Received (UTC): 2023-08-17 17:11:12 Sender: Megan Newsome
Group: Global SN Project
Megan Newsome (LCO/UCSB), Craig Pellegrino, Joseph Farah, D. Andrew Howell, Curtis McCully, Estefania Padilla Gonzalez, Giacomo Terreran report/s a classification of object: SN 2023pls
Type: SN IIRedshift: 0.0136
Remarks: Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe II near peak. There are good fits to SN 2005cs (SN IIP) and SN 2004et (SN IIP) within 5 days of maximum light. The supernova is closest to UGC 09002 (z = 0.0136, 2006HIPAS.C...0000; value from NED). This redshift is well-matched by narrow host hydrogen. Assuming this redshift, we measure a hydrogen velocity of about 12,000 km/s from Hα. The g-band absolute magnitude roughly coeval with the spectrum is approximately -16.65 (apparent magnitude 17.23). The absolute magnitude, high velocities, and blue continuum indicate that the SN is young. Further followup is encouraged.
The following Classification spectrum was provided:
Obsdate: 2023-08-16 08:34:22
Instrument: FLOYDS-S
Telescope: Faulkes Telescope South
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2023pls