DRAFT
2023-11-26 15:23:35
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.320....1G
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Gonzalez-Bañuelos, M. Kopsacheili (ICE), C. Gutiérrez (IEEC/ICE-CSIC), T. Moore (QUB), A. Sahu (Warwick), P. Pessi (Stockholm), S. Srivastav (Oxford/QUB), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (QUB), O. Yaron, R. Bruch (Weizmann), D. Young (QUB), 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, M. Fulton, M. McCollum, 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 2 Type II's, and 1 Type IIn

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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023 November 25, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) and GELATO (Harutyunyan et al. 2008 2008A&A...488..383H).

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 2023xxk [ATLAS23vfw] 08:58:34.567 -34:42:28.38 SN IIn 0.049 Around peak Redshift obtained from narrow hydrogen lines in the SN spectrum. The spectrum also matches with SLSNe-IIn. Current absolute magnitude -19.8. 08:58:34.567 -34:42:28.38 SN IIn 0.049
TNS 2023xbg [ATLAS23vfr] 20:45:47.390 -29:31:09.66 SN II 0.03 Before peak Redshift from spectral match. The light curve has been rising for about 3 weeks. 20:45:47.390 -29:31:09.66 SN II 0.03
TNS 2023xoc [ATLAS23vlc] 02:11:07.230 -18:55:20.35 SN II 0.03 After peak Redshift from spectral match. 02:11:07.230 -18:55:20.35 SN II 0.03

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