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 2020arXiv200309052S), 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...3a..26S) and by the ALeRCE broker (Forster et al. 2020 https://arxiv.org/abs/2008.03303), the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014 2014ApJ...788...48S), 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 2023 June 6, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), 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 | Source | Phase (days) | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TNS | 2023jht [ZTF23aaldwgw] | 13:31:12.761 | +25:18:50.37 | SN Ia | 0.08 | SDSS J133112.62+251849.6 | ZTF | Around peak | Redshift from spectral matching. | 13:31:12.761 | +25:18:50.37 | SN Ia | 0.08 | |
| TNS | 2023jms [ATLAS23ljw] | 23:03:33.363 | -45:10:26.21 | SN Ia | 0.09 | ATLAS | +8 to +10 | Redshift from spectral match. | 23:03:33.363 | -45:10:26.21 | SN Ia | 0.09 | ||
| TNS | 2023jou [ATLAS23llt] | 23:11:14.585 | -12:56:01.36 | SN Ia | 0.1 | GALEXASC J231114.70-125602.4 | ATLAS | +4 to +7 | Redshift from spectral match. | 23:11:14.585 | -12:56:01.36 | SN Ia | 0.1 | |
| TNS | 2023jqv [ATLAS23low] | 22:55:53.194 | -39:06:01.81 | SN II | 0.03 | ATLAS | > +20 | Redshift from host narrow emission lines in the transient spectrum. | 22:55:53.194 | -39:06:01.81 | SN II | 0.03 | ||
| TNS | 2023jqw [ATLAS23lox] | 22:29:08.006 | -22:11:39.89 | SN II | 0.038 | ATLAS | Around max | Redshift from host narrow emission lines in the transient spectrum. | 22:29:08.030 | -22:11:40.41 | SN II | 0.038 | ||
| TNS | 2023jth [ASASSN-23ei] | 21:42:31.639 | -51:13:54.62 | SN Ia | 0.05 | WISEA J214231.49-511353.8 | 0.05775 | ASASSN | Redshift from spectral match. | 21:42:31.639 | -51:13:54.62 | SN Ia | 0.05 | |
| TNS | 2023jto [GOTO23dr] | 22:11:53.957 | +18:41:43.13 | SN Ia | 0.07 | II Zw 171 | 0.069902 | GOTO | +11 to +20 | Redshift from the host galaxy. | 22:11:53.956 | +18:41:42.74 | SN Ia | 0.07 |
| TNS | 2023jvg [ZTF23aamsddm] | 22:21:22.183 | -11:06:30.47 | SN Ia | 0.06 | WISEA J222122.37-110631.4 | 0.064096 | ZTF | +8 to +10 | Redshift from spectral match. | 22:21:22.183 | -11:06:30.47 | SN Ia | 0.06 |
| TNS | 2023jvi [ZTF23aamqycj] | 13:31:22.281 | +25:37:01.03 | SN II | 0.025 | MCG+04-32-011 | 0.02507 | ZTF | Around peak | Redshift from the host galaxy. | 13:31:22.270 | +25:37:00.94 | SN II | 0.025 |
| TNS | 2023jvs [ZTF23aamhlcu] | 13:00:14.293 | +22:30:05.75 | SN Ia | 0.076 | SDSS J130014.12+223005.5 | 0.075639 | ZTF | –7 to –4 | Redshift from the host galaxy. | 13:00:14.293 | +22:30:05.75 | SN Ia | 0.076 |
| TNS | 2023jyn [ATLAS23lri] | 00:30:33.190 | -11:24:11.49 | SN II | 0.017 | MCG -02-02-034 | 0.016705 | ATLAS | Several weeks after | Redshift from the host galaxy. | 00:30:33.195 | -11:24:11.39 | SN II | 0.017 |
| TNS | 2023jzg [ZTF23aamwiqd] | 18:20:19.258 | +24:39:44.71 | SN Ia | 0.05 | ZTF | +4 to +7 | Redshift from spectral match. | 18:20:19.258 | +24:39:44.71 | SN Ia | 0.05 |
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