DRAFT
2023-12-21 14:02:01
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.353....1B
ePESSTO+ spectroscopic classification of optical transients
Authors: S. Barmentloo (OKC/SU), P. Pessi (OKC/SU), T. Schweyer (OKC/SU), J. Sollerman (OKC/SU), P. Wiseman (Southampton), M. Gromadzki (Warsaw), S. Benetti (INAF OAPd), O. Yaron (Weizmann), M. Fulton (QUB), A. Gkini (OKC/SU), S. Yang (HNAS), E. Zimmerman (Weizmann), J. Anderson (ESO), T.-W. Chen (NCU), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (QUB), D. Young (QUB), S. J. Smartt (Oxford/QUB), K. W. Smith, D. R. Young, 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)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications for 6 Type Ia supernovae and 4 Type II supernovae.

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 Pan-STARRS Survey for Transients (Chambers et al. 2016 2016arXiv161205560C), the ATLAS survey (Smith et al. 2020 2020PASP..132h5002S), the Gravitational-wave Optical Transient Observer GOTO (see Dyer et al. 2020, SPIE, 11445 2020SPIE11445E..7GD) and by the ESA Gaia Photometric Science Alerts Team DPAC.

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2023-12-20, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution) or Grism 11 (3380-7520, 16A 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 2023zku [PS23lsp] 01:15:03.210 -25:59:04.10 SN Ia-91T-like 0.112 pre-max Redshift from SNID template matching. 01:15:03.210 -25:59:04.10 SN Ia-91T-like 0.112
TNS 2023aakt [ATLAS23xqw] 01:41:57.020 -58:39:06.87 SN Ia 0.063 pre-max Redshift from SNID template matching. 01:41:56.980 -58:39:06.70 SN Ia 0.063
TNS 2023aakr [GOTO23bxc] 06:03:33.332 -44:54:56.34 SN Ia 0.09 pre-max Redshift from SNID template matching. 06:03:33.332 -44:54:56.34 SN Ia 0.09
TNS 2023yko [Gaia23dml] 02:34:08.520 -29:13:33.31 SN II 0.054 0.054 post-max Redshift from host galaxy. 02:34:08.520 -29:13:33.31 SN II 0.054
TNS 2023zrb [ATLAS23xec] 03:00:07.020 -57:09:33.95 SN Ia 0.081 0.08066 max Redshift from host galaxy 03:00:07.020 -57:09:33.95 SN Ia 0.081
TNS 2023ysx [Gaia23dna] 03:34:40.050 -55:19:13.30 SN II 0.052 post-max Redshift from narrow Halpha feature. 03:34:40.050 -55:19:13.30 SN II 0.052
TNS 2023zqw [ATLAS23xdw] 06:46:07.912 -37:48:02.64 SN Ia 0.107 max Redshift from SNID template matching. 06:46:07.912 -37:48:02.64 SN Ia 0.107
TNS 2023zcv [ATLAS23wwg] 09:53:07.389 -42:26:49.73 SN Ia 0.042 post-max Redshift from SNID template matching. 09:53:07.389 -42:26:49.73 SN Ia 0.042
TNS 2023xwe [Gaia23dll] 06:48:02.330 -58:01:00.62 SN II 0.03 max Redshift from SNID template matching. 06:48:02.330 -58:01:00.62 SN II 0.03
TNS 2023ywh [ATLAS23wrc] 10:39:20.110 -45:00:30.43 SN II 0.021 0.021 post-max Redshift from host galaxy. 10:39:20.100 -45:00:30.20 SN II 0.021
TNS 2023yxp [PS23lro] 01:40:34.359 -24:22:48.51 Other 0.32 Redshift is based on four emission lines from host galaxy in a low signal-to-noise spectrum. Hbeta is broader with FWHM 4500 km/s. At this redshift the object is brighter than -22. The object could be a SLSN or an AGN. 01:40:34.359 -24:22:48.51 0.32

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