ePESSTO+, the advanced Public ESO Spectroscopic Survey for Transient Objects (Smartt et al. 2015 2015A&A...579A..40S), reports the following supernova classifications.
Targets were supplied by the ATLAS survey (Smith et al. 2020 2020PASP..132h5002S), the Zwicky Transient Facility ZTF (Bellm et al. 2019 2019PASP..131a8002B) - data stream processed through the Lasair broker (Smith, Williams, Young et al. 2019 2019RNAAS...3...26S), and the Gravitational-wave Optical Transient Observer GOTO (see Dyer et al. 2020, SPIE, 11445 2020SPIE11445E..7GD).
Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2025 May 25, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution) and Grism 11 (3380-7520A, 16A resolution). Classifications were done using NGSF (Next Generation SuperFit; AstroNote 2022-191, Howell et al. 2005 2005ApJ...634.1190H), DASH (Muthukrishna et al. 2019 2019ApJ...885...85M ), and GELATO (Harutyunyan et al. 2008 2008A&A...488..383H).
The classification spectra and additional details can be obtained from http://www.pessto.org (via WISeREP) and the IAU Transient Name Server.
The classified objects are listed in the Related Objects table below.
| Catalog | Name | Reported RA | Reported DEC | Reported Obj-Type | Reported Redshift | Host Name | Host Redshift | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TNS | 2025lmb [ATLAS25fhk] | 15:52:06.712 | +21:26:48.53 | SN II | 0.047 | WISEA J155206.49+212645.9 | 0.0473 | Redshift from the host spectroscopy at NED. Good match with Type II using NGSF. | 15:52:06.712 | +21:26:48.53 | SN II | 0.047 |
| TNS | 2025kla [ZTF25aaqgnvm] | 15:19:36.596 | +19:19:01.95 | SN Ia | 0.089 | 2MASX J15193627+1919015 | 0.0899 | Redshift from the host spectroscopy at NED. Good match with normal Type Ia using NGSF. | 15:19:36.615 | +19:19:02.05 | SN Ia | 0.089 |
| TNS | 2025ljw [ATLAS25fgr] | 14:42:21.102 | -28:04:40.49 | SN Ia | 0.086 | WISEA J144222.55-280450.8 | 0.0857 | Redshift from the host spectroscopy at NED. Good match with normal Type Ia using NGSF. | 14:42:21.102 | -28:04:40.49 | SN Ia | 0.086 |
| TNS | 2025lyf [ATLAS25fnk] | 15:05:17.335 | -10:18:13.69 | SN Ia | 0.034 | WISEA J150517.00-101813.3 | 0.0336 | Redshift from the host spectroscopy at NED, and confirmed using the strong H-alpha and [N II] emission lines from the host in the spectrum. Good match with normal Type Ia using NGSF. The light curve with possible precursors. | 15:05:17.334 | -10:18:13.74 | SN Ia | 0.034 |
| TNS | 2025lkw [GOTO25cyg] | 20:29:44.321 | -57:57:19.91 | SN Ia | 0.06 | Redshift from the template match. Good match with normal Type Ia using NGSF and DASH. | 20:29:44.321 | -57:57:19.91 | SN Ia | 0.06 | ||
| TNS | 2025lwx [ATLAS25fiy] | 21:28:22.792 | -23:53:59.28 | Other | Blue and featureless spectrum. The transient is located close to the host nucleus. | 21:28:22.782 | -23:53:59.00 | |||||
| TNS | 2025lwt [ATLAS25fiv] | 21:50:29.566 | -13:39:20.49 | SN Ia | 0.09 | WISEA J215030.27-133931.8 | Redshift from the template match. Good match with normal Type Ia using NGSF and DASH. | 21:50:29.567 | -13:39:20.30 | SN Ia | 0.09 | |
| TNS | 2025lxe [ATLAS25fji] | 19:09:10.629 | -38:15:05.36 | SN II | 0.02 | Redshift from the template match. Good match with Type II using NGSF. The faint host in DESI Legacy Survey and with M_g ~ -16 mag. | 19:09:10.629 | -38:15:05.36 | SN II | 0.02 | ||
| TNS | 2025lwn [ATLAS25fin] | 23:05:18.825 | -12:29:41.23 | SN Ia | 0.08 | WISEA J230518.93-122934.8 | Redshift from the template match. Good match with normal Type Ia using NGSF and DASH. | 23:05:18.880 | -12:29:40.68 | SN Ia | 0.08 | |
| TNS | 2025lxp [ATLAS25fmm] | 21:58:24.227 | -16:34:15.01 | SN Ia | 0.045 | WISEA J215824.19-163415.5 | Redshift from the H-alpha emission line from the host seen in the spectrum. Good match with normal Type Ia using NGSF and DASH. The transient is located close to the host nucleus. | 21:58:24.190 | -16:34:15.19 | SN Ia | 0.045 |
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