TNS Classification Report No. 15262 [ 2023TNSCR1753....1G ]
Date Received (UTC): 2023-07-24 22:45:59 Sender: Estefania Padilla Gonzalez
Group: Global SN Project
Estefania Padilla Gonzalez, Joseph Farah, D. Andrew Howell, Curtis McCully, Craig Pellegrino, Megan Newsome, Giacomo Terreran report/s a classification of object: SN 2023nlk
Type: SN IaRedshift: 0.03
Remarks: Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe Ia near maximum light, including SN 1991M about a few days after maximum. The supernova ’s redshift is calculated from SNID, as the (z =0.031), with Si II 6355 velocity of approximately 11,000 km/s. Adopting the luminosity distance computed from this redshift (136.7Mpc ) ; the g-band absolute magnitude of the object is -16 (apparent magnitude 19.975, from ZTF, the magnitudes seem faint but that is because it is not at maximum light). This absolute magnitude and velocity is consistent with an SN Ia before maximum light.
The following Classification spectrum was provided:
Obsdate: 2023-07-24 00:00:00
Instrument: FLOYDS-S
Telescope: Faulkes Telescope South
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2023nlk
Date Received (UTC): 2023-07-24 22:45:59 Sender: Estefania Padilla Gonzalez
Group: Global SN Project
Estefania Padilla Gonzalez, Joseph Farah, D. Andrew Howell, Curtis McCully, Craig Pellegrino, Megan Newsome, Giacomo Terreran report/s a classification of object: SN 2023nlk
Type: SN IaRedshift: 0.03
Remarks: Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe Ia near maximum light, including SN 1991M about a few days after maximum. The supernova ’s redshift is calculated from SNID, as the (z =0.031), with Si II 6355 velocity of approximately 11,000 km/s. Adopting the luminosity distance computed from this redshift (136.7Mpc ) ; the g-band absolute magnitude of the object is -16 (apparent magnitude 19.975, from ZTF, the magnitudes seem faint but that is because it is not at maximum light). This absolute magnitude and velocity is consistent with an SN Ia before maximum light.
The following Classification spectrum was provided:
Obsdate: 2023-07-24 00:00:00
Instrument: FLOYDS-S
Telescope: Faulkes Telescope South
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2023nlk