DRAFT
2023-12-07 15:18:54
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.329....1D
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Dennefeld (IAP), A. Sainz de Murieta (Portsmouth), M. Magee, A. Sahu, A. Kumar, D. O'Neill (Warwick), A. Reguitti (INAF-OAB), S. Benetti (INAF OAPd), M. Fulton (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 (Weizmann), D. Young (QUB), E. Zimmerman (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, M. McCollum, T. Moore, J. 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 3 normal Type Ia SNe, 1 Type II SN, and 1 peculiar Type Ia SN.

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 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 December 06, 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 2023ypp [ATLAS23wkh] 03:31:49.211 -04:42:44.30 SN Ia 0.028 0.028 Max Redshift from host galaxy. SNID provides matches to normal SNe Ia around maximum light 03:31:49.211 -04:42:44.30 SN Ia 0.028
TNS 2023ype [ATLAS23wjy] 04:23:03.910 -63:11:51.93 SN II 0.019 0.019 Young Redshift from host galaxy. SNID provides matches to young SNe II 04:23:03.850 -63:11:51.97 SN II 0.019
TNS 2023yor [Gaia23djz] 05:38:33.780 -38:56:38.62 SN Ia 0.049 0.049 Post-max Redshift from host galaxy. SNID provides matches to normal SNe Ia a few weeks after maximum light 05:38:33.780 -38:56:38.62 SN Ia 0.049
TNS 2023ypq [Gaia23dkr] 07:22:16.540 -47:31:24.49 SN Ia 0.04 0.04 Max Redshift from host galaxy. SNID provides matches to normal SNe Ia around maximum light 07:22:16.540 -47:31:24.49 SN Ia 0.04
TNS 2023yjj [Gaia23die] 06:35:07.480 -28:08:29.65 SN Ia-pec 0.11 Post-max Redshift based on tempalte matching. SNID provides matches to 91T-like and super-Chandrasekhar SNe Ia. 06:35:07.480 -28:08:29.65 SN Ia-pec 0.11

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