DRAFT
2023-11-04 16:33:24
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.289....1A
ePESSTO+ spectroscopic classification of optical transients
Authors: A. Aamer, T. Moore (QUB), P. Ramsden (QUB/Birmingham), K. W. Smith, M. Fulton, C. Angus (QUB), S. Srivastav (Oxford/QUB), L. Galbany (IEEC/ICE-CSIC), T. Killestein, T. Nagao (Turku), S. Benetti (INAF-OAPd), J. Anderson (ESO), T. Müller Bravo (ICE), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl, D. R. Young (QUB), E. Zimmerman, O. Yaron (Weizmann), S. Sim, J. Weston, X. Sheng (QUB), L. Shingles (GSI/QUB), S. J. Smartt (Oxford/QUB), H. Stevance, L. Rhodes, A. Andersson, J. Gillanders, S. Ramaiya (Oxford), L. Denneau, J. Tonry, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech) A. Rest (STScI), C. Stubbs (Harvard), K. C. Chambers , M. E. Huber, A. S. B. Schultz, T. de Boer, J. Bulger, J. Fairlamb, H. Gao, C. C. Lin, T. Lowe, E. Magnier, P. Minguez, I. A. Smith, R. J. Wainscoat (IfA, Univ. Hawaii)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 6 SN Ia, 2 SN Ia-91T, 1 SN Ia-SC, 1 SN Ib, 1 SN Ibn, 2 SN II and 1 SLSN-I.

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 Pan-STARRS Survey for Transients (Chambers et al. 2016 2016arXiv161205560C), 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) and the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014 2014ApJ...788...48S).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 November 03, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), 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.

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 2023wea [ZTF23abnyvka] 01:04:39.884 -02:07:23.94 SN Ia 0.068 SDSS J010440.00-020723.3 ZTF -7 to -4 Faint Hα from host 01:04:39.878 -02:07:24.09 SN Ia 0.068
TNS 2023vpg [ZTF23abkklxm] 21:30:36.109 -13:07:10.80 SN Ia 0.081 WISEA J213036.09-130711.4 ZTF +8 to +10 Redshift measured using SNID and matching host lines 21:30:36.109 -13:07:10.80 SN Ia 0.081
TNS 2023wdi [ASASSN-23hs] 20:45:14.686 -05:29:01.36 SN Ia 0.027 MCG -01-53-004 0.026877 ASAS-SN -7 to -4 20:45:14.606 -05:29:02.32 SN Ia 0.027
TNS 2023vpe [ZTF23ablkbom] 03:06:06.856 +16:15:19.64 SN Ia-SC 0.06 ZTF -7 to -4 Redshift measured using SNID. ZTF pre-rise-pulse/early-excess. Strong CII 6580. Dwarf/Compact host. 03:06:06.885 +16:15:19.67 SN Ia-SC 0.06
TNS 2023wcy [ZTF23abnrtcb] 00:37:57.289 -04:26:45.89 SN II 0.042 ZTF -3 to +3 Faint narrow Hα from host. Possible SN II 00:37:57.290 -04:26:45.96 SN II 0.042
TNS 2023urr [PS23jgp] 02:12:27.823 +11:17:12.31 SN Ia 0.045 Pan-STARRS +8 to +10 Faint Hα from host. 02:12:27.823 +11:17:12.31 SN Ia 0.045
TNS 2023vwh [ZTF23abngbvw] 04:09:59.613 -06:05:52.46 SN Ibn 0.06 ZTF -3 to +3 Previously classified by SCAT/SNIFS as type II. Possibly asymmetric/weak p-cygni He-I 5875 visible, hence reclassification as SN Ibn 04:09:59.621 -06:05:52.47 SN Ibn 0.06
TNS 2023tvu [PS23ivc] 03:04:42.035 -30:31:01.86 SN Ib 0.053 Pan-STARRS >+20 Redshift from NaID host absorption line. Double peak in ATLAS lightcurve. 03:04:42.035 -30:31:01.86 SN Ib 0.053
TNS 2023wde [ATLAS23uvv] 03:35:13.013 -32:25:25.64 SN II 0.046 FCCB 0993 0.045785 ATLAS -3 to +3 Redshift from known host. Possibly late flash ionisation type II with broad Hα and CIV. 03:35:13.020 -32:25:25.28 SN II 0.046
TNS 2023taz [PS23ila] 02:03:17.306 -23:40:47.47 SLSN-I 0.42 Pan-STARRS -3 to +3 Redshift measured from SNID template matching. Very slowly evolving ATLAS lightcurve. 02:03:17.306 -23:40:47.47 SLSN-I 0.42
TNS 2023vlb [ATLAS23ulh] 05:24:01.259 -61:21:09.40 SN Ia-91T-like 0.07 ATLAS +8 to +10 Redshift measured using SNID. 05:24:01.259 -61:21:09.40 SN Ia-91T-like 0.07
TNS 2023vwa [ATLAS23urg] 04:39:48.566 -56:07:59.62 SN Ia-91T-like 0.08 ATLAS +4 to +7 Redshift measured using SNID. 04:39:48.566 -56:07:59.62 SN Ia-91T-like 0.08
TNS 2023vwu 08:40:06.390 -08:01:50.97 SN Ia 0.09 Pan-STARRS -3 to +3 Redshift measured using SNID. 08:40:06.390 -08:01:51.04 SN Ia 0.09
TNS 2023vtr [ZTF23abluzif] 09:31:21.144 -10:38:46.86 SN Ia 0.05 ZTF +4 to +7 Redshift measured using SNID. 09:31:21.143 -10:38:46.75 SN Ia 0.05

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