Spectroscopic Classification of AT2025znv with the Lick Shane Telescope
ATel #17449; K. Taggart, R. J. Foley (UCSC)
on 21 Oct 2025; 05:45 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Kirsty Taggart (k.taggart@ucsc.edu)
Subjects: Optical, Supernovae
We report the following classification of AT2025znv from spectroscopic observations with the Kast spectrograph on the Shane telescope. The target was supplied by the Young Supernova Experiment and identified using the target management platform YSE-PZ (Coulter et al., 2023, PASP, 135, 4501). All observations were made on 2025 Oct 20 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
PS25hsk | 2025znv | 07:31:59.58 | +42:33:44.95 | 0.0446 | II | post-peak | 1)
Notes:
When the redshift is given to 2 decimal places, it is derived from the SN spectrum. Otherwise, the redshift is determined from the host galaxy.
1) We measure a narrow H-alpha component (FWHM ~400 km/s), likely from the host galaxy, superposed on a broad component (FWHM ~15,900 km/s) that has an absorption minimum at approximately 9,000 km/s
