DRAFT
2023-05-21 11:57:26
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.126....1M
ePESSTO+ spectroscopic classification of optical transients
Authors: I. Mandel (Monash University), L. Harvey, J. Terwel, G. Dimitriadis, K. Maguire, U. Burgaz (TCD), C. Gutiérrez (UTU), T. Killestein (Warwick), M. Dennefeld (IAP/Paris & Sorbonne), J. Anderson (ESO), T.-W. Chen (TUM/MPA), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (Birmingham), O. Yaron (Weizmann), D. Young (QUB), D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello, C. R. Angus, Z. Ansari, N. Arendse, C. Gall, C. Grillo, S. H. Bruun, C. Hede, J. Hjorth, L. Izzo, H. Korhonen, S. Raimundo, D. Kodi Ramanah, A. Sarangi, R. Wojtak, H. Pfister (DARK, U Copenhagen), K. Auchettl (DARK, UC Santa Cruz, U Melbourne), K. C. Chambers, M. E. Huber, E. A. Magnier, T. J. L. de Boer, J. R. Fairlamb, C. C. Lin, R. J. Wainscoat, T. Lowe, H. Gao, J. Bulger, A. S. B. Schultz (IfA, Hawaii), A. Engel, A. Gagliano, G. Narayan, M. Soraisam (Illinois), Q. Wang (JHU), A. Rest (JHU, STScI), S. J. Smartt (Oxford/QUB), K. W. Smith (QUB), K. Alexander, P. Blanchard, L. DeMarchi, A. Hajela, W. Jacobson-Galan, R. Margutti, D. Matthews, C. Stauffer, M. Stroh, G. Terreran (Northwestern), M. Drout (U Toronto), D. A. Coulter, R. J. Foley, T. Hung, C. D. Kilpatrick, C. Rojas-Bravo, M. R. Siebert (UC Santa Cruz), E. Ramirez-Ruiz (UC Santa Cruz, DARK), 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. Srivastav, M. Fulton, M. McCollum, T. Moore, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), C. Stubbs (Harvard)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 6 Type Ia's and 2 Type II's.

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 Young Supernova Experiment (Pan-STARRS - see Jones et al. 2021, 2021ApJ...908..143J).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 May 20, 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 2018met [ZTF18aatiudp] 15:08:32.047 +07:35:08.27 SN Ia 0.075 -3 to +3 Redshift obtained from NED 15:08:32.047 +07:35:08.27 SN Ia 0.075
TNS 2023hyg [ATLAS23kff] 22:16:34.282 -19:19:40.83 SN Ia 0.065 -3 to +3 Redshift derived from spectral matching 22:16:34.312 -19:19:41.16 SN Ia 0.065
TNS 2023hzw [PS23cyi] 14:09:15.668 -04:15:08.93 SN Ia 0.11 -3 to +3 Redshift derived from host galaxy lines in the spectrum 14:09:15.668 -04:15:08.88 SN Ia 0.11
TNS 2023ijs [ZTF23aajbkan] 15:21:04.990 -15:13:47.30 SN II 0.02 Redshift derived from spectral matching 15:21:04.985 -15:13:47.31 SN II 0.02
TNS 2023ilm [ATLAS23kiw] 22:22:51.063 -54:55:04.30 SN II 0.035 Redshift derived from spectral matching 22:22:51.063 -54:55:04.30 SN II 0.035
TNS 2023irr [ATLAS23knv] 21:13:34.372 -39:52:07.54 SN Ia 0.085 +4 to +7 Redshift derived from spectral matching 21:13:34.372 -39:52:07.54 SN Ia 0.085
TNS 2023irs [ATLAS23knw] 21:37:10.114 -20:38:06.02 SN Ia 0.074 -3 to +3 Redshift derived from host galaxy lines in the spectrum 21:37:10.127 -20:38:05.96 SN Ia 0.074
TNS 2023ito [ZTF23aakaqht] 12:49:43.185 +13:30:52.78 SN Ia 0.056 SDSS J124943.15+133053.7 0.05581 -3 to +3 Redshift obtained from NED 12:49:43.174 +13:30:52.77 SN Ia 0.056

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