TNS Classification Report No. 20555 [ 2025TNSCR.949....1W ]
Date Received (UTC): 2025-03-10 17:10:30 Sender: Jacob Wise
Group: ZTF
Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), Zoe McGrath (LJMU) report/s a classification of object: SN 2025aca
Type: SN IIbRedshift: 0.084
Remarks: Spectrum taken post-peak is well-fit by template spectra from previously classified SN Ib events at a redshift of z = 0.084 ± 0.006. However, the potential presence of a weak, broad H-alpha feature combined with the event's ZTF lightcurve displaying an initial period of fast fading before a brighter peak motivates us to tentatively classify this as a SN IIb. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022).
The following Classification spectrum was provided:
Obsdate: 2025-02-26 01:16:03
Instrument: SPRAT
Telescope: Liverpool Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025aca
Date Received (UTC): 2025-03-10 17:10:30 Sender: Jacob Wise
Group: ZTF
Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), Zoe McGrath (LJMU) report/s a classification of object: SN 2025aca
Type: SN IIbRedshift: 0.084
Remarks: Spectrum taken post-peak is well-fit by template spectra from previously classified SN Ib events at a redshift of z = 0.084 ± 0.006. However, the potential presence of a weak, broad H-alpha feature combined with the event's ZTF lightcurve displaying an initial period of fast fading before a brighter peak motivates us to tentatively classify this as a SN IIb. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022).
The following Classification spectrum was provided:
Obsdate: 2025-02-26 01:16:03
Instrument: SPRAT
Telescope: Liverpool Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025aca