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 Gravitational-wave Optical Transient Observer GOTO (see Dyer et al. 2020, SPIE, 11445 2020SPIE11445E..7GD) and by the BlackGEMtelescope array (Groot et al. 2024, PASP, 136, 115003 2024PASP..136k5003G).
Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2025 January 22, using EFOSC2 and Grism 11 (3380 - 7520A, 13A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), GELATO (Harutyunyan et al. 2008 2008A&A...488..383H), Superfit (Howell et al. 2005 2005ApJ...634.1190H) and NGSF (Next Generation SuperFit; AstroNote 2022-191, Howell et al. 2005 2005ApJ...634.1190H).
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 | 2025iv [GOTO25ft] | 02:07:27.254 | +19:11:36.68 | SN Ic | 0.0173 | Spectrum with significant host contamination. After removing the host emission lines, the continuum gives good matches with SNe Ic and Ic-BL. | 02:07:27.256 | +19:11:36.88 | SN Ic | 0.0173 | ||
TNS | 2025zi [BGEM J033854.58-262214.6] | 03:38:54.586 | -26:22:14.65 | SN Iax[02cx-like] | 0.0046 | Very faint SN Iax, currently at q = 19.3 mag, possibly rising. The approximate absolute magnitude is M = - 12.2 mag | 03:38:54.586 | -26:22:14.65 | SN Iax[02cx-like] | 0.0046 | ||
TNS | 2025qw [GOTO25ji] | 06:52:01.527 | +27:07:22.64 | AGN | 0.037 | Broad Ha and Hb, narrow O III, and erratic light curve. | 06:52:01.447 | +27:07:23.00 | AGN | 0.037 | ||
TNS | 2024afyo [GOTO24jrm] | 06:55:06.841 | -39:20:21.39 | SLSN-I | 0.18 | Orphan transient rising for 30 days. Spectral matches with superluminous supernovae at z~0.16-0.18. We classify this tentatively as SLSN-I, although we caution that the spectrum does not cover the Ha region at this redshift and therefore another luminous supernova type (e.g. SLSN-II) is possible | 06:55:06.841 | -39:20:21.39 | SLSN-I | 0.18 |
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