DRAFT
2023-06-06 15:49:15
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.165....1K
ePESSTO+ spectroscopic classification of optical transients
Authors: T. Kravtsov (ESO), E. Hueichapan (UDP), P. Wiseman (Southampton), A. Reguitti (UNAB/INAF-OAPd), T. Pessi (UDP), L. Galbany (ICE-CISC), S. Benetti (INAF - OAPd), J. Anderson (ESO), T.-W. Chen (TUM/MPA), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (QUB), O. Yaron (Weizmann), D. Young (QUB), S. J. Smartt (Oxford/QUB), K. W. Smith, M. Fulton, S. Srivastav, K. C. Chambers, M. Huber, A. Schultz, T. de Boer, J. Bulger, J. Fairlamb, C.-C. Lin, T. Lowe, E. Magnier, P. Minguez, R. J. Wainscoat, H. Gao (IfA, Hawaii), A. Rest (STScI), C. Stubbs (Harvard), 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), M. McCollum, T. Moore, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), A. Rest (STScI)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 14 Type Ia's, 6 Type II's (of which 2 are Type IIn), a Type Ic, and a SLSN-II. SN2023gpw displays a blue continuum with weak H-alpha, H-beta, and HeI emission at z=0.08. SN2023jjm resembles a luminous SN Ic or Ic-BL. Follow-up of these transients is encouraged.

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 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 June 5th, 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.

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 2023gpw [ZTF23aagklwb] 13:02:18.700 -05:51:10.95 SLSN-II 0.08 Redshift from tentative Balmer lines as well as HeI. 13:02:18.700 -05:51:10.95 SLSN-II 0.08
TNS 2023iex [ZTF23aajkisd] 21:39:56.063 +24:39:34.50 SN IIn 0.029 Redshift from host (NED) 21:39:56.070 +24:39:34.66 SN IIn 0.029
TNS 2023ipc [ZTF23aajqnyu] 09:38:40.008 -04:19:46.90 SN Ia 0.07 14 Phase and redshift from SNID fit 09:38:40.008 -04:19:46.90 SN Ia 0.07
TNS 2023jbk [ATLAS23lag] 11:42:24.781 +20:07:07.31 SN II 0.02 Redshift from known host (NED) 11:42:24.781 +20:07:07.31 SN II 0.02
TNS 2023jes 15:34:16.216 -00:11:46.52 SN Ia 0.07 2MASX J15341580-0011436 0.06784 7 Phase and redshift from SNID 15:34:16.216 -00:11:46.52 SN Ia 0.07
TNS 2023jfk [ZTF23aalhnbc] 21:44:24.881 -11:57:49.79 Other 0.097 WISEA J214424.99-115749.3 Redshift from narrow host lines. Transient shows a blue, featureless continuum. 21:44:24.881 -11:57:49.79 0.097
TNS 2023jib [ZTF23aakrkjt] 15:08:15.911 +06:47:58.13 SN Ia 0.05 7 Phase and redshift from SNID fit 15:08:15.911 +06:47:58.13 SN Ia 0.05
TNS 2023jiy [ATLAS23lgj] 11:14:26.748 -11:42:09.06 SN Ia 0.05 7 Phase and redshift from SNID fit 11:14:26.748 -11:42:09.06 SN Ia 0.05
TNS 2023jjm [ZTF23aalhqci] 20:45:45.686 +10:51:26.96 SN Ic 0.11 WISEA J204545.71+105126.4 Redshift from SNID fit 20:45:45.680 +10:51:27.00 SN Ic 0.11
TNS 2023jkp [ZTF23aakyoji] 13:42:08.950 +00:52:15.00 SN Ia 0.09 7 Phase and redshift from SNID fit 13:42:08.950 +00:52:15.00 SN Ia 0.09
TNS 2023jlo [ZTF23aalklzg] 13:35:05.736 -20:14:41.27 SN Ia 0.0425 WISEA J133505.73-201441.8 -3 Phase from SNID fit, redshift from narrow host emission lines 13:35:05.736 -20:14:41.27 SN Ia 0.0425
TNS 2023joz [ATLAS23lmi] 14:19:41.735 +09:33:53.10 SN Ia 0.079 14 Phase from SNID fit, redshift from known host (NED) 14:19:41.735 +09:33:53.10 SN Ia 0.079
TNS 2023jpi [ATLAS23lnr] 21:37:18.949 +18:01:23.42 SN Ia 0.09 -4 Phase and redshift from SNID fit 21:37:18.946 +18:01:23.51 SN Ia 0.09
TNS 2023jqm [ATLAS23los] 00:37:35.386 -25:21:23.70 SN Ia 0.063 >+21 Redshift from known host, phase from SNID fit 00:37:35.386 -25:21:23.70 SN Ia 0.063
TNS 2023jsb [ATLAS23lqf] 21:49:58.437 +14:09:24.66 SN Ia 0.03 -6 Redshift and phase from SNID fit. SN is remote (>100 kpc) from known hosts at this redhift. 21:49:58.438 +14:09:24.68 SN Ia 0.03
TNS 2023jux [ASASSN-23en] 00:21:26.746 +07:01:57.61 SN IIn 0.069 PGC 1312433 Redshift from narrow transient emission lines 00:21:26.624 +07:01:58.41 SN IIn 0.069
TNS 2023jwj [ZTF23aalprtr] 11:22:54.443 +01:07:04.01 SN Ia 0.072 -4 Redshift from known host, phase from SNID fit 11:22:54.443 +01:07:04.01 SN Ia 0.072
TNS 2023jwk [ZTF23aamquyf] 11:41:40.170 -02:14:46.66 SN Ia 0.054 0 Redshift from known host (NED), phase from SNID fit 11:41:40.170 -02:14:46.66 SN Ia 0.054
TNS 2023jwr [ZTF23aamvyyl] 15:17:06.612 +11:21:50.49 SN Ia 0.04636 LEDA 1392477 0.04636 -7 Redshift from known host (NED), phase from SNID fit 15:17:06.596 +11:21:50.66 SN Ia 0.0464
TNS 2023jws [ZTF23aamumxw] 12:04:20.666 +09:11:38.03 SN II 0.02306 Z 69-39 0.02306 Redshift from known host 12:04:20.666 +09:11:38.03 SN II 0.0231
TNS 2023jyo [ATLAS23lrj] 01:29:26.759 -01:11:57.03 SN II 0.016 Redshift from known host 01:29:26.785 -01:11:57.21 SN II 0.016
TNS 2023jaz [ATLAS23kzb] 03:23:04.912 -80:26:33.72 SN Ia 0.07 7 Redshift and phase from SNID fit 03:23:04.912 -80:26:33.72 SN Ia 0.07
TNS 2023jxj [ZTF23aamyzcf] 21:39:40.016 +05:58:24.18 SN II 0.06 Redshift from SNID fit 21:39:40.006 +05:58:24.14 SN II 0.06

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