DRAFT
2023-11-18 15:13:29
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.312....1K
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Kopsacheili, M. Gonzalez-Bañuelos (ICE), C. Gutiérrez (IEEC/ICE-CSIC), M. Dennefeld (IAP), A. Gkini (Stockholm), N. Ihanec (Warsaw, ING), G. Leloudas (DTU Space), J. Sollerman (Stockholm), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (QUB), O. Yaron, R. Bruch (Weizmann), D. Young (QUB), J. Tonry, L. Denneau, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt (Oxford/QUB), K. W. Smith, S. Srivastav, M. Fulton, M. McCollum, T. Moore, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), A. Rest (STScI), C. Stubbs (Harvard)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 1 Type Ia, 1 Type IIn, 1 Type IIb, 1 Type Ic-BL and 3 blue featureless objects.

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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 November 17, 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), 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.

Show current TNS values
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 2023xoc [ATLAS23vlc] 02:11:07.212 -18:55:20.20 Other 02:11:07.230 -18:55:20.35 SN II 0.03
TNS 2023xpq [ZTF23abqeyxk] 08:21:32.958 -15:24:49.63 Other 08:21:32.958 -15:24:49.63
TNS 2023xqo [ATLAS23vnr] 09:16:57.029 -25:33:07.23 Other 09:16:57.030 -25:33:06.80 SN II 0.02
TNS 2023xrs [ZTF23abqiykq] 02:45:39.846 -20:48:35.76 SN Ic-BL 0.04 WISEA J024539.92-204836.1 Before peak Redshift from spectral match 02:45:39.860 -20:48:35.86 SN Ic-BL 0.04
TNS 2023xuz [ZTF23abrhwtt] 21:48:16.235 -02:04:08.98 SN Ia 0.05 –7 to –4 Redshift from spectral match 21:48:16.236 -02:04:09.05 SN Ia 0.05
TNS 2023xxj [ATLAS23vfv] 10:50:21.111 -33:24:04.50 SN IIn 0.097 Before peak Redshift obtained from narrow hydrogen lines in the SN spectrum 10:50:21.110 -33:24:04.39 SN IIn 0.097
TNS 2023xoo [ATLAS23vlq] 01:52:44.837 -03:23:56.39 SN IIb 0.017 Redshift obtained from the galaxy emission lines in the SN spectrum. 01:52:44.880 -03:23:56.22 SN IIb 0.017

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