TNS Classification Report No. 14102 [ 2022TNSCR3655....1P ]
Date Received (UTC): 2022-12-24 00:34:49 Sender: Ismael Perez-Fournon
Group: SGLF
F. Poidevin, I. Pérez-Fournon (IAC & ULL), Z. Delgado-González (ULL), S. Geier (GRANTECAN & IAC), R. Clavero, C. Jiménez Angel (IAC & ULL), R. Könyves-Tóth (Konkoly Observatory, Univ. of Szeged), R. Marques-Chaves (Univ. of Geneva), C. M. B. Omand (The Oskar Klein Centre), and R. Shirley (Univ. of Southampton) on behalf of the SGLF SLSN group report/s a classification of object: SN 2022abtm
Type: SLSN-IRedshift: 0.308
Remarks: AT 2022abtm was selected for LT SPRAT spectroscopy as a SLSN candidate using the ZTF public alerts, ATLAS forced photometry, the ALeRCE light curve classification, and our SGLF ZTF database and filters. It was also reported as a SLSN candidate by Chen et al. (AstroNote 2022-265). The classification and redshift were determined from our LT SPRAT spectrum using SNID (S. Blondin & J. L. Tonry 2007, ApJ, 666, 1024), with good matches to several SLSNe-I at z = 0.306-0.308 at about 9 days before maximum light. No host galaxy is visible on the DESI Legacy Imaging Surveys images. The current absolute magnitude after correction for interstellar extinction is about Mg = -22, Mr = -22. ZTF light curve: https://lasair-ztf.lsst.ac.uk/object/ZTF22abvngdr/ https://alerce.online/object/ZTF22abvngdr https://antares.noirlab.edu/loci/ANT2022n6tgouuws22t DESI Legacy Imaging Surveys finding chart: https://www.legacysurvey.org/viewer?ra=345.975728303&dec=15.7721520676&zoom=15&layer=ls-dr9&mark=345.975728303,15.7721520676
The following Classification spectrum was provided:
Obsdate: 2022-12-23 21:11:42
Instrument: SPRAT
Telescope: Liverpool Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2022abtm
Date Received (UTC): 2022-12-24 00:34:49 Sender: Ismael Perez-Fournon
Group: SGLF
F. Poidevin, I. Pérez-Fournon (IAC & ULL), Z. Delgado-González (ULL), S. Geier (GRANTECAN & IAC), R. Clavero, C. Jiménez Angel (IAC & ULL), R. Könyves-Tóth (Konkoly Observatory, Univ. of Szeged), R. Marques-Chaves (Univ. of Geneva), C. M. B. Omand (The Oskar Klein Centre), and R. Shirley (Univ. of Southampton) on behalf of the SGLF SLSN group report/s a classification of object: SN 2022abtm
Type: SLSN-IRedshift: 0.308
Remarks: AT 2022abtm was selected for LT SPRAT spectroscopy as a SLSN candidate using the ZTF public alerts, ATLAS forced photometry, the ALeRCE light curve classification, and our SGLF ZTF database and filters. It was also reported as a SLSN candidate by Chen et al. (AstroNote 2022-265). The classification and redshift were determined from our LT SPRAT spectrum using SNID (S. Blondin & J. L. Tonry 2007, ApJ, 666, 1024), with good matches to several SLSNe-I at z = 0.306-0.308 at about 9 days before maximum light. No host galaxy is visible on the DESI Legacy Imaging Surveys images. The current absolute magnitude after correction for interstellar extinction is about Mg = -22, Mr = -22. ZTF light curve: https://lasair-ztf.lsst.ac.uk/object/ZTF22abvngdr/ https://alerce.online/object/ZTF22abvngdr https://antares.noirlab.edu/loci/ANT2022n6tgouuws22t DESI Legacy Imaging Surveys finding chart: https://www.legacysurvey.org/viewer?ra=345.975728303&dec=15.7721520676&zoom=15&layer=ls-dr9&mark=345.975728303,15.7721520676
The following Classification spectrum was provided:
Obsdate: 2022-12-23 21:11:42
Instrument: SPRAT
Telescope: Liverpool Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2022abtm