DRAFT
2023-05-19 12:57:40
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.118....1H
ePESSTO+ spectroscopic classification of optical transients
Authors: L. Harvey, I. Mandel, J. Terwel, U. Burgaz, G. Dimitriadis, K. Maguire (TCD), T. Killestein (Warwick), M. Dennefeld (IAP/Paris & Sorbonne), C. Gutiérrez (UTU), J. Anderson (ESO), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (QUB), O. Yaron (Weizmann), 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, 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), T.-W. Chen (TUM/MPA), C. Stubbs (Harvard), S. Wyatt (Arizona), D. Sand (Arizona), R. Amaro (Arizona), J. Andrews (Arizona), M. Lundquist (Arizona), S. Valenti (UC Davis), S. Yang (INAF-OAPd), D. E. Reichart, J. B. Haislip, V. Kouprianov (UNC)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 1 Type Ib, 1 Type II and 2 Type Ia (of which 1 Type Iax). We encourage followup observations.

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) and the DLT40 surveys (Tartaglia et al. 2018 2018ApJ...853...62T).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 May 18, 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 2023hym 14:13:35.180 -45:25:44.80 SN Iax[02cx-like] 0.01 ESO271m022 0.01 -3 to +3 14:13:35.180 -45:25:44.80 SN Iax[02cx-like] 0.01
TNS 2023itz 21:49:33.415 -15:13:12.32 SN Ib 0.022 -3 to +3 21:49:33.415 -15:13:12.32 SN Ib 0.022
TNS 2023inx 19:17:13.499 -29:03:33.14 SLSN-II 0.12 Redshift is from the Halpha and Hbeta emission lines 19:17:13.499 -29:03:33.14 SLSN-II 0.12
TNS 2023isf 19:31:22.756 -39:46:28.45 SN Ia 0.07 -3 to +3 19:31:22.756 -39:46:28.45 SN Ia 0.07

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