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) and 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).
Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 May 21, 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), 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 | Source | Phase (days) | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TNS | 2023iwn [ATLAS23ktn] | 11:32:27.524 | -32:27:13.79 | QSO | 1.525 | Redshift derived from host galaxy lines present in the spectrum | 11:32:27.524 | -32:27:13.79 | QSO | 1.525 | ||||
TNS | 2023iwr [ATLAS23kuz] | 11:33:45.225 | -23:38:22.84 | SN Ia | 0.065 | -3 to +3 | Redshift derived from spectral matching | 11:33:45.225 | -23:38:22.84 | SN Ia | 0.065 | |||
TNS | 2023isp [ZTF23aajauud] | 17:07:50.318 | -07:32:48.53 | Varstar | 0 | 17:07:50.318 | -07:32:48.53 | Varstar | ||||||
TNS | 2023iwo [ATLAS23kub] | 15:58:22.793 | +17:08:31.29 | SN Ia | 0.091 | -7 to -4 | Redshift obtained from NED | 15:58:22.793 | +17:08:31.29 | SN Ia | 0.091 | |||
TNS | 2023jah [ATLAS23kws] | 20:31:09.277 | -44:15:44.77 | SN Ia-91bg-like | 0.03 | -3 to +3 | Redshift obtained from NED. Good matches with the transitional SN 1986G | 20:31:09.277 | -44:15:44.77 | SN Ia-91bg-like | 0.03 | |||
TNS | 2023ixy [ZTF23aajkejg] | 17:26:20.708 | +23:39:44.93 | SN Ia-91T-like | 0.11 | SDSS J172620.67+233944.9 | -3 to +3 | Redshift derived from spectral matching | 17:26:20.711 | +23:39:45.09 | SN Ia-91T-like | 0.11 | ||
TNS | 2023iwy [ZTF23aakmewi] | 18:00:18.621 | +26:24:32.02 | SN | 0.02 | Unclear classification. The host appears to be a low-luminosity galaxy east of the transient, seen in deep-stack ATLAS and Legacy images. Reasonable spectral matches include Type II SN, 00cx-like Type Ia SN and SLSN at z ~ 0.02 | 18:00:18.622 | +26:24:32.04 | SN Ic-BL | 0.03 | ||||
TNS | 2023jbe [ATLAS23kzj] | 20:10:58.769 | -56:42:50.88 | SN Ia | 0.052 | -3 to +3 | Redshift derived from host galaxy spectrum present in the slit | 20:10:58.769 | -56:42:50.88 | SN Ia | 0.052 | |||
TNS | 2023jao [ATLAS23kxz] | 19:57:23.715 | -49:09:50.72 | CV | 0 | 19:57:23.715 | -49:09:50.72 | CV | ||||||
TNS | 2023jal [ATLAS23kxi] | 18:55:13.256 | -69:29:24.86 | CV | 0 | 18:55:13.256 | -69:29:24.86 | CV | ||||||
TNS | 2023irq [ATLAS23knt] | 22:22:44.906 | -15:42:16.65 | SN Ia-91T-like | 0.06 | -7 to -4 | Redshift derived from spectral matching | 22:22:44.904 | -15:42:16.61 | SN Ia-91T-like | 0.06 | |||
TNS | 2023hpa | 07:46:16.872 | +18:22:36.84 | Other | LSBC F560-04 | 0.0526 | Target was not visible on acquisition image | 07:46:16.872 | +18:22:36.84 |
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