DRAFT
2023-10-31 15:21:21
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.286....1W
ePESSTO+ spectroscopic classification of optical transients
Authors: B. Warwick (Warwick), E. Hueichapan (UDP), M. Pursiainen, A. Sahu, A. Kumar, J. Lyman, D. Coppejans, D. O’Neill, K. Ackley, M. Magee (Warwick), S. Srivastav (QUB), L. Galbany (IEEC/ICE-CSIC), P. Wiseman (Southampton), S. Benetti (INAF-OAPd), J. Anderson (ESO), T. Müller Bravo (ICE), T.-W. Chen (Stockholm/TUM/MPA), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl (QUB), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), J. Tonry, L. Denneau, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (SAAO), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt (Oxford/QUB), K. W. Smith, D. R. Young, 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 Ib, 8 Type Ia, 2 Type Ia-91T-like supernovae, and 1 event with a blue and featureless spectrum.

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), and by the Xingming Observatory Sky Survey (XOSS).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 30 October 2023, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B).

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 2023vyy [ZTF23abnpddd] 21:15:00.739 -12:48:18.88 SN Ia 0.07 LEDA 947349 0.07 Good match to SNID template for Ia 21:15:00.739 -12:48:18.88 SN Ia 0.07
TNS 2023vqn [ATLAS23unj] 22:52:31.722 +18:14:06.48 SN Ia 0.07 SNID match with Ia, with SNID redshift match for 0.07 22:52:31.726 +18:14:06.46 SN Ia 0.07
TNS 2023vxb [ZTF23abndgcq] 21:42:29.397 +18:24:32.24 SN Ia 0.05 SNID match with type Ia supernova with redshift 0.05 21:42:29.399 +18:24:32.22 SN Ia 0.05
TNS 2023way [XM123MZ] 21:24:11.159 +15:59:23.03 Other 0.029 SDSS J214229.44+182424.5 0.029 Blue continuum. Associated with galaxy at known redshift of 0.029. 21:24:11.150 +15:59:22.92 SN II 0.018429
TNS 2023vxc [ZTF23abndank] 20:25:23.804 -12:23:37.95 SN Ia-91T-like 0.07 Good SNID template match for SN Ia-91T, with SNID redshift 0.07 20:25:23.800 -12:23:37.82 SN Ia-91T-like 0.07
TNS 2023vyx [ZTF23abnpjlt] 21:20:44.376 -09:31:18.22 SN Ia 0.08 SDSS J212044.24-093116.6 Good SNID match for SN Ia with redshift 0.08 21:20:44.383 -09:31:18.40 SN Ia 0.08
TNS 2023wbw [ATLAS23usx] 00:36:18.780 +11:23:30.59 SN Ia 0.036 WISEA J003618.14+112335.3 0.036 Good SNID template match with SN Ia at the host redshift. 00:36:18.791 +11:23:29.90 SN Ia 0.036
TNS 2023vwr [ZTF23abnkwpb] 23:20:52.321 -04:11:36.28 SN Ia 0.06 Good SNID template match with SN Ia of redshift 0.06. 23:20:52.328 -04:11:36.48 SN Ia 0.06
TNS 2023wbt [ZTF23abnpoqp] 23:45:51.159 -06:46:56.06 SN Ib 0.036 0.036 Good match with SNID template for SN Ib at the host galaxy redshift of 0.036. 23:45:51.158 -06:46:56.13 SN Ib 0.036
TNS 2023vvy [ZTF23abmtzcg] 23:39:03.253 -16:35:11.43 SN Ia 0.09 Good SNID match to Ia with redshift 0.09 23:39:03.257 -16:35:11.58 SN Ia 0.09
TNS 2023vqm [ATLAS23uni] 23:12:18.318 -76:19:10.76 SN Ia 0.065 Redshift from narrow host lines 23:12:18.318 -76:19:10.76 SN Ia 0.065
TNS 2023wbx [ATLAS23utg] 23:59:25.293 -41:26:03.39 SN Ia-91T-like 0.06 Good SNID template match to SN Ia-91T with redshift 0.06. 23:59:25.310 -41:26:03.37 SN Ia-91T-like 0.06

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