TNS Classification Report No. 14248 [ 2023TNSCR.111....1P ]

Date Received (UTC): 2023-01-15 14:25:51
Sender: Ismael Perez-Fournon
Group: SGLF

I. Pérez-Fournon, F. Poidevin (IAC & ULL), Z. Delgado-González (ULL), S. Geier (GRANTECAN & IAC), 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 2022acsx

Type: SLSN-I
Redshift: 0.292

Remarks: AT 2022acsx (ZTF22abynkpz) 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. The classification, redshift, and phase were determined from our LT SPRAT spectrum using SNID (S. Blondin & J. L. Tonry 2007, ApJ, 666, 1024), with matches to the type-I SLSN PTF12dam at z = 0.292 at about 8 to 14 days before maximum light. A faint host galaxy is visible on the DESI Legacy Imaging Surveys DR10 images, with g = 23.92, r = 23.12, and z = 22.91. ZTF light curve: https://lasair-ztf.lsst.ac.uk/object/ZTF22abynkpz/ https://explorer.alerce.online/object/ZTF22abynkpz https://antares.noirlab.edu/loci/ANT2022mftxqhxdb91t DESI imaging finding chart: https://www.legacysurvey.org/viewer?ra=93.2463828&dec=68.8125978&zoom=15&layer=ls-dr10&mark=93.2463828,68.8125978

The following Classification spectrum was provided:

Obsdate: 2023-01-14 22:09:59
Instrument: SPRAT
Telescope: Liverpool Telescope

Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2022acsx